So what's your opinion or alternative solution? I can see filtering being a controversial topic since it has been applied to restrict users.
My own motivation is: I want to run my own small federated instances. I'd like to invite friends and family and also maybe random people. And I want to like and use my instance myself, not lock it down for everyone and defederate too much. Currently Lemmy prevents me from doing that. I'd either need to close registrations and exclude minors, make sure my family also likes the communities I like to visit... Or be comfortable with potentially breaking the law or ending up with a severely limited instance I don't like myself.
If it were possible to invite everyone while not blocking content, and I'd have some means of unlocking accounts... It'd allow me to provide service to everyone. And with this proposal it wouldn't necessarily change anything for people on other instances.
Also it would allow me to swear and discuss adult topics in dedicated communities without taking into account whether that's appropriate. That's probably more of a concern for people who do more than just discuss politics here... But that's some additional benefit.