• Yes loz "leak" is a thing that happened, but that's not CLOSE to being the strongest hint, not even by a mile. It only raises hopes, but it's not a solid fact or anything.
• AT missing. Sakurai went through the trouble of deconfirming him due to the demand of fans of him back in smash 4, I don't see him doing that this time, but rather he is letting us speculate about him while his AT is still missing entirely.
• His competition is not that big with the other zelda characters. If you clearly think someone like Lana has more chances than freaking Skull kid, there's something wrong with you, lol. Groose? give me a break. Impa is mostly echo material, and i don't think "echo material" characters are a reason to not think we are getting an actual Zelda series newcomer, specially after many smash games without getting a newcomer at all. So the competition list is shorter than you think.
• Again, if he is not that requested for or popular in results as some of you say, Sakurai wouldn't have taken the trouble of making sure what he was back in Smash 4. And if the roster for Ultimate was decided back then or around the time, well you can pick up what i'm trying to say…
Also, we DON'T know the real results of the ballot, nobody knows them. All we have are some made up polls that come from specific sites, meanwhile the real ballot covered a more worldwide audience that weren't on a specific forum or whatever. So let's stop pretending we know what were the real high rankings in the ballot. Hell, I don't even believe to this day that Bayo made it more to the top than Ridley and King K Rool. The ballot might have not actually meant anything for Smash 4, but solely for Ultimate. I wouldn't doubt Sakurai deciding to give us a shock thing like Bayo back then, and kept the ballot for a bunch of shocking reveals for his next game, Ultimate. Skull kid's ranking might be higher than any of you think and there's no actual fact pointing against it, unless you're a hacker and know the ACTUAL results.
• Do I have to mention this one?… ok… I'm NOT on board with the whole room teasing with sakurai, I'm not gonna be one of those… BUT I'm not gonna discard it EITHER, considering the pattern hasn't been debunked yet. Last room was very DK themed as we all could mostly agree, and he got confirmed. Unless the next reveal fits or doesn't fit the theme of the latest room, we can't discard this possibility just yet. Put it at the lowest part of the list of Skull kid hints, alongside with loz's leak, but don't discard it entirely until we actually get official confirmation or debunking of this theory.
• Young link has termina field music on his video on the official website. Why? His design is mostly based on OoT, yet he has elements of MM involved, specially this suspicious choice of song out of all the ones they could've gone through (seriously, they could've gone with saria's song or even the regular hyrule field theme, did they? no they didn't). Also no Final smash confirmed yet, if there's a more heavier MM theme going on with young link, I don't doubt Skull kid might have a play on it. If they wanted to give young link the regular triforce slashing final smash, they would've done it already, and i doubt very much that his final smash is gonna be him running over you while riding epona or something like that. I think we can agree termina music + missing FS is a possible hint for Fierce Deity FS. This might or not might have anything to do with skull kid, but since there's MM theme involved with Y Link, it definitely adds at least 1% more to his chances imo.
So yeah… let's keep assuming Loz's leak is the only reason skull kid is being requested… WRONG again, sir. Where does this assumption of that being the only reason, really coming from? just because you haven't been keeping up with the actual fanbase behind him? Hell i've been wanting him since melee times, just like many have been with ridley, king k, etc. Just because his popularity became overshadowed by other characters, doesn't mean it's nonexistent.
This might also not be a hint but… I think it's worth mentioning, if we are getting different zelda character versions for the sake of having a zelda character of each game (Link from Botw, Ganondorf from OoT, Zelda from ALBTW), I think MM being the next newcomer for zelda series is not at all far from possible. MM is definitely one of the Zelda games that left a huge mark on the series, if not in gaming as well back then. I don't think Groose, or freaking Lana have more chances than that, let's be serious lol. SS Impa? Yes, but as many of us believe, she is echo material for sheik. Vaati really is a known villain but i don't think he left much of an impact in comparison to what majora's mask did, but that's just my opinion, you might think otherwise, and that's fine. Ghirahim? Sakurai must be high as hell if he is going to make his AT become playable before Skull kid's , i'm sorry. Beast Ganon? I would LOVE that… but if Zelda series haven't gotten a real newcomer for a long time, but rather just clones or reskins… do you think we will get another Ganon? I would like it, but i HIGHLY doubt it… Of course I could go on with so many freaking Zelda characters, but I think I made my point that Skull kid is probably one of the biggest choices Sakurai has for a newcomer zelda character.