a huge effort for that person btw

Avoiding animal products really isn't that difficult, I made the change myself.

when everyone does a million things in their lives that also contribute to these issues

That's exactly the problem, our modern way of living is extremely wasteful and destructive, giving up because there's a lot of issues isn't gonna help, we should be talking about these things and making changes.

And if we are going to drop meat, let's also push people to stop driving, stop flying, stop buying gadgets, stop buying all plastics, stop using air conditioning, and on and on.

Yes, exactly, now you're getting it.
We all need to make meaningful changes to fight climate change, that's what this thread is about.
"World's hottest day since records began" should be a wake up call to not continue as usual.

but which of these do you think you can get enough of a mass of people to give up?

I never claimed fighting climate change was gonna be easy, that doesn't mean we should give up.

It has to be aimed at governmental bodies to make these changes on a meaningful scale.

Yes, I've continually said we advocate for regulation which can be done while changing our individual habits and lifestyles to match those changes we are advocating for.

Does it make sense to ask politicians to make regulations while you yourself are supporting the thing you want regulated?

Going vegan is one of the most impactful changes a person can make in terms of climate impact and it really isn't that hard.