Broken photos and links is honestly one of the biggest detriments separate from the attention span and social media issues.
Most forums barely make enough to sustain themselves so the self hosted photos are always quite small and it's a bit frustrating when you're trying to see something in detail. I've been thinking of hosting my photos elsewhere but a lot of places like imgur could end up suffering the same fate as photobucket someday.
That being said I'm still regularly updating here and directing people here when I can.
I'll say one last thing that's a praise of forums and makes me hate social media lately - AI accounts and scammers making the 50th shitty group called "S30 240z 260z 280z and 280zx lovers and owners group" with stolen photos from reputable people make me want to blow up some Facebook servers. Drives me insane. Every few days lately someone posts about how someone scammed them out of money from some group. If you're even remotely active online the accounts have so many red flags too, so it hurts to see.