Presumably they are utility maximizers who assume that the 'standards of care' for animals won't actually be rigorously enforced.
Humans sue.
So do the parents of children but it hasn't stopped flaws in Tesla's FSD. Not entirely directly comparable, sure, but it's the same attitude of "get it to market before it's ready".
"FSD", surely
If there's one thing we've learned from Elon's acquisition of Twitter, it's that his default response to "you'll get sued" is a confident belief he can beat the rap.