One problem with .onion is that it is not for casual sites or people trying to build lasting communities. The Tor Project only prioritizes security and they can and have and will again wipe out the entire tor web to nothing if they feel it is required by security. They have full control of the network. No v2 tor sites exist anymore, none of the communities, they were are just wiped out by the Tor Project because only their security use case matters. They care nothing for communities that use their software. Do not try to build communities on Tor .onion. It'll just be made inaccessible some day. All the hyperlinks will become useless. All the databases of sites, all the discussions, just gone. Because the tor project cannot abide potential lax security of older protocols.

.onion is not a way to own your domain. Even though you may have the private key and no one else does, the true owners of your domain remain the tor project themselves, as they can make it inaccessible to tor clients any time they want. They have before, they will again. And they aren't going to listen to any community feedback about it. Tor .onion is only for people that don't care about longevity or links working. Only for people who have 'security' as their number 1 and only concern.

I wasted a decade building my personal sites and casual communities on .onion. I won't be fooled again. A dot com or org is just as much mine as a .onion is, unfortunately, and at least those don't all disappear every 10 years.