If there WERE, then I haven't seen any of them. And I for one, at least at the start, loved being in Hrothgar spaces. And while Viera were memed, they weren't memed any more than other races were.
Obviously I wasn't on all of them, but it sure as hell was not as prevalent as the sentiment that came from Viera. Worse still is how that one leaked to in-game interactions, so even if you did do that yourself, you're still an incredibly small minority. Viera players have hounded Hrothgar players for years in far greater numbers and in far greater intensity.
A sentiment I don't even blame on the playerbase alone. Not even 50/50. The majority of this blame goes to the devs, because as you said, were they not showing favouritism, people wouldn't be at eachother's throats. There wouldn't be misunderstandings. And there sure as hell wouldn't have been the whole "you guys took male viera from us" bull that was circulating.
Besides, what you're saying is a sentiment that popped up very recently in public spaces. At least the "they should never have been implemented" bit from a Hrothgar player. Because only about a year and a half ago did you start seeing Hrothgar players be publicly bitter toward Vieras. But as I said, at the start, over 3 years ago, the sentiment that Viera had toward Hrothgar was already common and widespread, and the frequent shafting of Hrothgars from conversations about races with problems was also common. And that's what I meant. When I say "I didn't see Hrothgars complain Viera were implemented", I'm talking about how it wasn't common at all for Hrothgar players to complain about Viera existing in public spaces as often as Viera did to us. It was a sentiment that's only since gradually grown, due to both the playerbase's constant mistreatment of Hrothgar and attention to Viera, to the dev team ignoring Hrothgar problems and demands and only catering to Viera. Even if in a botched state regardless.