In America, literally 99% of livestock is factory farmed. Here, the idea of animals living a life that is anything but miserable on a farm is largely a myth. If you don't expressly know how the livestock animal that was used for meat was treated, you can safely presume it was tortured.
People are demonstrably ok with animals being mistreated. They continually endorse the abuse in the industry when there are other options available to them. It is simply not important enough to people for them to bother changing their behavior.
I'm always surprised to hear people unimpressed with others on dating apps. A couple of my friends have shared their "feeds" and I was struck by how many good-looking people are out there. But they would swipe away from just the smallest turn-offs becoming deal breakers. Like if I saw these people in real life, I would think of them as average looking at worst, many being remarkably attractive. This is in the 20s to mid 30s range like the tweet. I definitely understand deciding you're incompatible based on politics or religion or culture but most of the time it would be for minor quirks. It felt like they were spoiled for choice in my eyes.
But then again, they're in serious long term relationships with conventionally attractive and supportive partners now so maybe being picky pays off. At the time, their reluctance to settle was a very frustrating experience for them.