I don't agree with the gatekeeping of the take from a literal point of view, but rather I think that the sentiment of "It is reactionary to support exploitation and oppression, and it is hypocritical to claim that you oppose it while still continuing to support it" that leaks from it is spot on 
Also, I gotta love how someone posted two separate comments within a minute of each other just to articulate a very short point of this take being "ableist." That's 100% indicative of seething.
I also love (this time using this word unironically) that she's a fellow black vegan communist who is sick of non-vegan leftist bullshit.
Even if we assumed that it was an infallible premise that being vegan requires a position of privilege (which is likely untrue — soy, rice, etc. is some of the cheapest food there is), it doesn't logically follow that you have to remain ideologically anti-vegan.