Personally, I think Facebook is a terrible choice. User information there is not protected
and is monetized. As a discussion forum it is useless. It is ad laden, tracker laden and
not user friendly. I don't have a Facebook account anymore and I am not interested in
getting one.
This forum email list works fine for me. If we need another email server there are several
in the amateur radio community to chose from, including TAPR. If we want a commercialized
product, there is groups.io which has a large community of ham radio related lists, mostly
migrated from yahoo.
Just my opinion.
73 de bill K7WXW