I don't know these particular people, but, absolutely, many people grew up with IRC and similar earlier online social forums as a refuge from trauma, or to find community or acceptance.
(That started in the age of https://en.wikipedia.org/wiki/On_the_Internet,_nobody_knows_... , before more conventional social dynamics took over the 'Net.)
If that theory is correct, I'd guess there's a good path to something that everyone feels better about. But it might involve Freenode being turned over to a nonprofit. I think many traditional users wouldn't go back, but the right nonprofit might find a way to pivot to new service to the world. In the credible nonprofit scenario, the value of the Freenode brand now might be of the flavor: we made mistakes, learned dearly, came out much stronger.