I actually think the reason she doesn’t talk about animal welfare etc is because she’s too in to it and doesn’t want the backlash. I remember she once uploaded a video saying that humans didnt evolve to eat meat or something years ago and the backlash to that was rightfully intense. Plus for a lot of cancer research jobs, animal testing is a necessary part of the field and she might not want to alienate potential laboratory groups or job opportunities etc. I still wonder if they feed their pets meat.