I agree about the say/do gap, but that's my point really. That people are feeling the need to say it. Its indicative of a change in attitude
But not a change in behaviour.
The thread asked for what will be frowned upon, and obviously if people are feeling the need to qualify/defend/minimise/excuse their meat consumption, they are obviously aware that its becoming that way
Honestly, I think it's just trendy. Like Amanda from motherland saying she's practically vegan and it's total horseshit, but it's the type of thing people say on Instagram.
We're still a million miles away from it being socially unacceptable to eat meat in practice and given it's been part of our culture since the dawn of time I don't think we'll ever get there.
We will, however, see cutting down, hopefully higher welfare standards and possible some lab grown meat in the near future. But I cannot see it going entirely, ever.