Just seeing the word "tux" reminds me of a lot of really sub-par quality games and applications of ~2003 that people would talk about as if they were just as good as the commercial offerings.
People would seriously talk of it being "the year of the linux desktop" and "the year of linux gaming" while trying to claim that tux racer felt like a AAA game.
If the best thing the platform has to offer is ports and rip-offs of other games it's not a viable platform and it's insulting to people's intelligence to try to claim otherwise.
I'm not knocking the effort maintainers put in and I'm sure they learn from it and enjoy the process. That's not something to be dismissive of. But claiming it's superior to commercial games insults the genuine quality in games out there, and actually harms linux gaming because it reduces your credibility when talking about gaming.