"i have an idea. let's all criticize EVERY action that people actually DO."

Any action that creates more and worse problems than were there before you came are not worth doing. It would have been much better for these people to have done nothing than to carry out this action.

Or do you think that saving the lives of a few individual animals justifies permanently damaging ecosystems and potentially wiping out entire species forever?

It is actions like this one that give ALF a bad name.