Yes, what I mean is instead of having separate forums for everything, a Reddit/Lemmy type platform where people can create their own community to start threads. So if I wanted I could create a tractor community with sub communities for different brands and in there would be a single discussion to discuss a specific model, but my credentials would also allow me to go on the cooking community, in the baking sub community to take part in a discussion on strawberry shortcakes that's been going on for months...
Reddit type "forums" just lead to the same questions/content being posted again and again and if you know a lot about a subject and just happen to miss the one time someone asks a question about it then that discussion is lost to time.