It’s really not that surprising. There have always been activists who lack a consistent worldview. Whites only unions, communists in favour of colonising etc.

A lot of people genuinely don’t see non human animals as even remotely comparable to a human, and often react with intense indignation at even the merest suggestion of comparison. This was, often very cruelly, patterned into them at a young age. I have hope that most will come round, after all we all did and idk about you but I am a garbage fire of a human being.