Hardly; forums are in agony and people tend to flee to discord servers in search for quick support or discussions. Forums nowadays are terrible because of interfaces used, content which seem really poor and hostile attitude towards people. That last thing seems to be really prominent when it comes to moderation: there are people who shouldn't be given such task in the first place who unload their personal issues onto strangers. Recently I had a chance to see a thread where mod raises a toddler tantrum because of how post was written - it was just... embarrassing.
As for reddit: I wonder how much further this site has to be turned into a sanitized corporate product before users will seriously consider abandoning it. Or perhaps this is some weird attachment issue and they're unable to do that.
Lemmy was supposed to be a fediverse alternative but it doesn't seem to be that much popular at all. There are tildes but I read opinions saying it's an echo chamber and marketing probing grounds. Tho same could be said about reddit too.