There's a lot to unpack here...

I don't see how you can not see the correlation of keeping animals trapped and in shitty situations to inevitably kill them when they're literally still children as not being animal abuse.

Liquified dinosaurs :')

In seriousness, veganism is about making the best changes you can. Nobody is perfect but you try to do the least damage you can do. Plus it's a spectrum, there of course will be some vegans that don't care/know much about how certain commodities are built on the suffering of others. Plus some "vegans" are just plant based and are just in it for personal health so they wouldn't care about the ethics in it all and the hypocrisy you talk about.

Also extra note. Don't look at them focusing on the suffering of animals meaning they don't care for human suffering. They do. When those at the bottom get brought up it will bring the others above them higher too. It's a two birds one stone kind of situation (pardon the hypocritical pun ;p)

I've never ever heard of a vegan say fish isn't meat. If a vegan is eating fish, they're not vegan (same goes for honey, but that's a different topic). They're a pescatarian that eats a lot of plant based foods.