Tex Avery disliked Screwy Squirrel all because he wasn't as popular as Bugs Bunny and also because of the MGM execs wanting him to create a Bugs Bunny like star
Jeffrey
Tex Avery is the GOAT.
What makes this bit so funny is that it's not just aimed at one particular series, but instead mocking the cutesy trend that was started by Disney and imitated by several studios trying to ape off their success by directly copying them (including MGM itself).