I just realized something regarding a comparison with Pokemon & Fire Emblem. In a way, Starter pokemon are about the same as the main protagonists in Fire Emblem, tipically Lords. People have problems with the FE protagonists while i see far less complaining from getting starter pokemon in comparison.
I've seen many people say most FE characters are the same (regardless if you talk about clones or not) and also say that all pokemon are very distinct & different (aside from Pichu obviously).
Why is that then? I'm in the viewpoint that both series have quite a distinct cast of characters in playstyle, regardless of FE having 2.5 echo fighters while pokemon has 0.5.
Familiarity, mainly. Most Nintendo fans have experience with Pokémon games (or the first couple generations at minimum, where the majority of its fighters are from), while Fire Emblem was a niche series until recently. There's this idea within the Smash community that FE isn't supposed to be as important
because it wasn't part of most of our childhoods aside from Melee. Which itself is part of a bigger issue where Smash fans treat the roster like it determines who matters and who doesn't, but that's a whole other mess.
It also leads to a lot of knee-jerk judgments bashing FE characters as being "more anime swordfighters", even though its most recent (non-echo) newcomers are a spellsword who combines swordplay and magic, a half-dragon shapeshifter who can morph individual limbs to attack with, and a weapon master who also uses a lance, an axe, and a bow.
And the problem is...the backlash toward Fire Emblem isn't even consistent. Corrin was met with pitchforks and Byleth nearly as many at first, but people were hoping for Chrom to make it as soon we learned how echo fighters were being handled, and the majority of Roy's support for Smash 4 DLC came from Melee fans! The
less unique of the quartet were the ones met with less toxicity because the fans most likely to get toxic already knew who they were! Which, again, seems to be because of people latching onto names they recognize, since they remembered Roy from Melee and Chrom from how most of the community assumed he was a lock for Smash 4 on lord status alone.
That said...Pokémon hasn't been totally free of it. I've seen some "has enough reps...but I want [insert mon from Gen 1-3 here]" talk every now and then, so the problem still persists in a different form...