You sound so cynical. I didn’t suggest to i.e. stop driving cars by tomorrow, because that would (as you stated) not be possible in the real word. Stop eating animal products is very different, because you choose to do so every single day and you CAN stop it tomorrow. It’s a super simple action we could take. But most people don’t do it because most people don’t do it.
I obviously already broke that habit and I invite you give it a try.