It's why I don't use the term myself.
Are there instances where vegenaises* do use their chuddiness to give God awful takes on things like Israel's veganwashing? Yes.
Are there instances where it seems like some vegans need to be educated on the fact that other forms of oppression beyond the kind of oppression that the movement is fighting against can exist within that movement? Yes.
Are there vegans who just do some all-around cracKKKer shit that makes it seem like they're completely forgetting the anti-oppression nature of the animal liberation movement? Yes.
But let's be real here: most of the times that people have gripes with "white veganism" are just instances where they're trying to reconcile the cognitive dissonance of harboring a reactionary sentiment (anti-veganism) and leftism simultaneously.
Let's not forget that many of these fuckers who do this are white themselves and have also proven themselves to be totally inconsiderate of the voices of BIPOC vegans.
*vegenaise = vegan mayo = white vegan
Especially since such critiques can be similarly leveled at many aspects of leftism. Every socialist movement has their reactionaries that twist the purpose into something that suits the needs of reaction. For example: 'White Leftism' cannot truly represent leftism, and representing leftism as 'white leftism' to hate on leftism is just an incorrect way of going about it, and ignores the largest contribution to leftism is the Global South.
They're giving ground to reactionaries due to their own reactionary sentiment, because they'd rather be comfortable than challenge their beliefs.
Thats my personal take at least