No where in your post did i see them being judgmental. In fact you come across as judgemental. They aren’t forcing you to eat zabiha. If they prefer eating zabiha, it’s their choice
No one is free of sin. Everyone sins. Some sin more, others sin less.
If I listen to music(haram) doesn’t mean I should stop earning halal or eating halal.
If I eat haram, doesn’t mean I should stop praying 5times.
Every sin has its own punishment.