You couldn't make a more senseless argument if you tried. I pretty much stopped taking him seriously before the Batman quoting part, which just annoyed me. You're not some hero because you advocate a top tier. It's 2015. We live in an age where unnecessary overpowered characters get nerfed to keep the game balanced. We patch the game so the game is accessible to anyone who wants to use any character.
You know why so many people waited for Smash 4 and ditched Brawl the moment it came out? To get away from Meta Knight. To be able to play as Mario, Captain Falcon, Link, Ganondorf, and their favorites without the pressure of being forced to switch because their character was balanced poorly and everyone is barking at them to "pick a real character."
I'll agree with you on one thing - it is too early. It's much too early to patch the game. We don't have national tournament results and the game is still developing. Dedede, ROB, and Mr. Game & Watch were early top tiers before being knocked out in place of Ice Climbers and Olimar. That took years, but nothing changed on the lower side of the tier list. Only a few characters were viable, limiting the diversity of the roster and alienating players from the game.
Smash 4 is the most balanced game in history. Everyone has a favorite they can use, and many of these characters have untapped potential. Is the crying over Diddy justified? Yes. Does he need a patch? It wouldn't hurt. Taking away his early kill combo still gives him safe aerials, tons of strength, the bananas, and the best non-tether grabs in the game.
Because honestly, this whole "advocating top tier" mentality is the worst thing you can do to the game. Hordes of players switch out their favorites to play a "best" character just to get wins at tournaments. This is a practice known as selling out. You will not be recognized because you carried yourself through the tournament using your character. You merely relied on the strength of a character by observing tactics that give you a considerable advantage over the rest of the roster. You're a dime-a-dozen player who used the same character everyone else did.
I have a lot to learn about this game. We all do. But when you castrate the roster to only a few select characters to advocate playing the best characters, you're supporting a paradigm where the only way to win is to "pick the best or die." Then it becomes the circle-jerk of top playing top tiers, and anyone who wants to use their favorite to win is either fighting an uphill battle the entire time or is pressured to conform to top tier. What does that mean? Less variety in tournaments. The game will become the joke of the fighting game community, just like Melee did (Fox only) and Brawl (Meta Knight and Snake dominating brackets). It gets tiresome quick.
If a patch is made, what happens? The game becomes more balanced and people aren't living under a dark cloud of knowing another conformist Diddy (or Sheik/Sonic/Lucario) is coming for them. The patch is very likely to happen, and I'll tell you now the first patch the 3DS version got was warmly welcomed. No one said, "this is BS, my favorite character is gone." Because the characters that needed buffs got them, and we worked them to our advantage.
And if we didn't get a patch, we at least have the grace of knowing this game is balanced enough where we can adapt. No more edge-hogging, shield-pushing off stage, or tripping to slow down characters. All it takes is a little time to adapt.
And quite frankly, Diddy is kind of overrated. Extremely annoying, but not the menace that Meta Knight and Snake were in Brawl.