Doesn't matter if they're there if you can't reach them.

So, it's one thing to use the platform to reach the people, but it's another thing entirely to rely on the platform as sole means of communication. I don't know which they were doing, but I've seen a number of groups fully relying on things like Facebook and Meta products in general, and that's just not sustainable. Like, maybe if you have a link there to your actual, page or whatever it is, that's fine, but to rely on it entirely is not wise and not sustainable.

That isn't to say that there's a ready alternative, but I think if groups didn't rely on it so completely there probably would be by now.

I do take your meaning though and it is entirely valid.