Some vegans decide all cats, like all other animals, should join their club, whether they want to or not. Deemed dubious practice by some but not impossible by others.
The admins at c/vegan ban anyone who speaks inconvenient truth into their echo bunker. I am proudly banned for arguing for the ethical treatment of obligate carnivores (long before this latest explosion of misinformation and the promotion of animal abuse.)
Before this the mods at c/vegan had iron fisted control over what ideas were acceptable in their echo bunker. They actively promoted pseudo-scientific propaganda that supported their self-assured ideological moral purity and banned anyone who question the misinformation or posted peer reviewed science that contradicted the misinformation. Their echo bunker has been blown open, their lies and ideological censorship are on full display, and like insects exposed when their rock is lifted they are scurrying around trying to find somewhere ideologically dark and safe to hide.