I agree. I’m watching /r/ModCoord and it seems quite a lot of subs are going dark indefinitely - but we need the biggest subs on board to make a difference.
Advertisers are taking note, though, which is promising - especially if we can get a bit of steam behind the campaign to bring subs down indefinitely.
My belief is that no, it wouldn’t - because the posts don’t contain identifiable information about people. I’m not an expert, though, and I’d love for someone to come and correct me if I’m wrong.
Edit: I just saw that @S4nvers gave a more detailed answer than me a bit lower down, essentially agreeing with me but quoting the relevant part of GDPR to explain why.