Either the person making the joke enjoys JRPGs and is making fun of people that get salty when those gain more love/attention than series from other genres; or the OP is the complete opposite, saying it as to throw a jab at Nintendo to show their low expectations due to the excessive amount of JRPGs revealed.
Considering this joke can be read in two completely opposing ways it's kinda on you to read it as them being "assholes", which even so it's a bit excessive since it's a very harmless joke. Not sure what you mean by them not seeing Fire Emblem as much of an improvement either, it was just mentioned because it's also an anime styled RPG that gets lots of random hate.