There's almost 0 state efforts to preserve the cultural identities of immigrants of any kind
When people celebrate "diversity" in the West, it's just eating shawarma, drinking boba, watching Anime, listening to kpop, and eating at an Ethiopian restaurant. Pure commodification and consumerism masquerading as celebration and promotion of foreign cultures
Or you'll have people fetishizing about spicy latinas, lightskins, and Asians like they're fucking Pokemon cards
Boba liberals are 100% real. It's mostly East Asian liberals whose (faux) progressivism is more motivated by self-hatred of being Asian than any real substantial belief in progressivism. They are only (faux) progressivism because they associate progressivism with Westernization/whiteness. So, you get a lot of boba liberal women who refuse to date Asian men because of "patriarchal Confucian values" but exclusively date white men. I guess the Black community is also hit by those same patriarchal Confucian values originating from noted African philosopher Confucius. Any connection to their Asian roots is through the shallowest way possible, basically food since Anglo food is so inferior to Asian food (and ever single other cuisine) that even the most self-hating Asian doesn't have it in them to say Anglo food is better. But the food is complete entry level food that even white people like. You don't see boba liberals repping food like cow tongue and chicken feet. It's always entry level shit like egg rolls and fried rice.
In regards to your point, yes I do think there are some Asian diaspora who self-flagellant about being anti-Black. Does the Asian community have a pervasive problem with anti-Blackness? Of course, you just need to see the number of Asians who continue to die on the affirmative-action-is-bad-acktually hill or circlejerk over rooftop Koreans. Colorism is a pervasive thing and while its origins isn't necessarily anti-Black, it's for fucking sure anti-Black in 2023. The problem is when these boba liberals spend the vast majority of their time and energy self-flagellating their community for being anti-Black while having none of that vitriol for the mayos or understanding where the anti-Blackness came from. When someone says with the straight face that Asians are more racist towards Black people than white people, what more does there need to be said?