yes I feel somewhat similar but there are concrete problems we can address.

the new paradigm is having your real life legal name tied to your internet posts about how sensitive you are inequality. websites like reddit are so popular that they take away from textboards - if you want to stay updated on news it's all going to be there first.. so textboards aren't as efficient and go out of favor. japan is lucky that they have 2ch instead of sites like that and facebook.

Another thing that i feel is fragmenting boards is excessive moderation and censorship. primarily the reason I ever went to places like 8ch was because I wanted to be able to post threads without the being deleted like you know where. Well isn't true anymore. You can't rely on the existing imageboards to not censor your posts unfairly. I could run a new one that only deletes spam and moves off topic threads out but how will I get more than 2 people to even visit my site? Anyway I feel this fragments because there are a lot of people that thank the mods for deleting stuff (god knows why), "rulecucks" they are called. I don't see the point, if i wanted my shit deleted i could just post it to reddit.

All that said I think there will always be a demand for anonymous boards. There is a modern one atob.xyz it's pretty fun and interesting - I'm not a fan of all the wacky web 2.0 stuff in general but on atob it's a lot of fun. I think we could improve some stuff about existing chans too and make them accessable to a wider group - primarily just having one that isn't run by jerks.

For a sense of belonging, I don't know. I really feel more astranged than ever before. I'm always looking for new people that I can relate to and/or get along with. I definitely haven't been able to find my place, or people who value me on 4chan or whatever though.