Speaking personally I can't say I have, but then again I've never been as involved with the community through its forums as I have now. My join date here is shown as 2024, but that's only because I made an account here to discuss the graphics update as we were being shown upcoming material for it. I've actually been playing since 2014/2015
Which leads me to wonder how many people that play the game simultaneously use the forums. I've seen people say it's only a small number that do, but I wouldn't have a way to verify that
and the reason why I feel as though it's too soon to really call it an exodus is because of how large the game is. With what was shown, it's roughly 25 or so people in the english speaking forums that are announcing their departure. It could be larger than that, or maybe people will change their mind / still play despite what they've said
It's really hard to say and we don't have access to the information that SE would
I don't say any of this to diminish or to put down how they feel about the game. If people are truly unhappy and feel as though their voice isn't being heard then I think the only logical course of action would be to stop giving the company money
Honestly I view the forums as the same sort of trap housing falls under, because you need an active service account to post here yet this is the place you are redirected to regarding feedback about the game