((( safe hugs )))
I think this is a really good thread. I hope you don't mind me ''quoting'' this post. I have, very occasionally, sent a pm to a member on pc or another online group and received no reply. That is absolutely fine... I rarely send PMs anyway except to a few trusted people. I have also occasionally had people being mad at me for not having replied to a PM of theirs within say 12 hours.
I do (kinda) live like a ''hermit'' irl, I've been hurt by so many who completely misunderstood me. And who were very abusive. I can be confusing, but not that confusing. Everyone deserves respect (unless obviously abusive and then blocking them is an answer hopefully) Or irl some have insulted me and then closed their door. My grrrr bear didn't have a quick enough response and I was in freeze mode

((( safe hugs )))