Sorry, but I just don't think this attitude is useful for reducing harm to animals. It's rare for people to hear about veganism and then go straight from eating meat to eating 0 animal products, for 100 reasons. I spent like 10 years vegetarian before finally going vegan.

This overly critical attitude and stereotypes associated with it do a lot to push people away from bothering with making any steps at all.

No one is able to fully eliminate animal harm from their lives, and any steps that anyone is making on the road to reducing it should be applauded. It's our only option if we want to be anything other than a hated minority.