It's funny how some people cling to privacy and then fill their Facebook page with literally every detail of their private lives. I don't mean you, I mean others.
I think you're right to want to be cautious about what you put on the internet as I said in my post actually, some things shouldn't be divulged. I'm a little cautious if new people too, especially these days and that means I don't engage with them much which probably limits my opportunity to assist in their growth; it's just how it is.
I suppose we need to do what feels right and if that's staying within a smaller group then so be it.
As for swapping details, that's something that happens over a long period of time, with the two I mention it was years; not one or two, more than that. It's a big step that can't be undone and I guess can go badly so it's something one needs to think solidly through. I tend not to like Discord too much myself, but I know a lot of communication happens there which is possibly why people don't swap phone details as often.
Anyway, thanks for commenting and sharing your perspective, I always appreciate it.