I’m in the same boat. I want Lemmy to be a firehose of content, the overwhelming majority of which I won’t ever want to interact with. I want that because different people are interested in different things, and that’s what allows for even the niche communities to find their footing with more than a small contingent of people.
I think the tools at our disposal as users and administrators of Fediverse systems are already good enough to manage and control your own experience, and I’m confident that they’ll continue to improve at a rapid click. The experience of using Lemmy as a Reddit replacement has already improved dramatically since June 12th, and it does so every day. I appreciate that others may feel much more strongly about the “dumbing down” of the overall content and community than I do, and for those folks joining an instance that outright defederates is a great option.
Folks are quick to tell people how they should be using Lemmy. “Don’t sign up for one of the big instances, you should use a small one instead because federation” is a big one - but there’s a lot of appeal in this model with being signed up to the instances generating the majority of the content the broader community is consuming because it makes finding that content easier than it otherwise would be. My hope is that the larger instances like lemmy.world will at least test the waters with Threads federation to see what it actually does to the community before taking the step of defederation, because right now those large instances are what’s feeding the rest of the rest of Lemmy.
As it stands, having those large instances federated with Threads and having smaller communities defederated seems like a best of both worlds scenario, because a small instance defederating with Threads won’t lose out on the other content being generated by those larger instances, but those who want to trudge through the mire of mass appeal can do so in one place.