Reading your other links I don’t understand why you take this stance
The problem with forking Lemmy is in starting from all the bad that is inherently there, and trying to make it better. That is way more work than starting fresh with more developers. IE, not using Rust for a web app and UI, better database queries from the start, better logging/functions from the start; not adding on bandaids. A fork of Lemmy will have all of Lemmy’s problems but now you’re responsible for them instead.
Assuming you are an experienced developer, as am I, I have said this almost a thousand times. It’s almost always wrong. Lemmy’s codebase is decently clean and organized, and seems to be around 50,000 lines. All you are going to get by forking is having to rewrite a bunch of CRUD.
The other option is writing tools and plugins to interface with Rust’s API. Lastly, as long as you keep your history clean on your fork, you can continue to rebase onto the original. I think rewriting is just a terrible idea.
Anyway, if you do end up leaving lemmy, why not just go to one of the many standard forums? Discourse is nice.
All that being said, a rewrite is still harder. Think how much work kbin and lemmy have put in. Think of all the apps that have been developed around them. It’s still sql driven, meaning you can easily write any kind of moderation tool you want in any language of your choice.
I think the Rust vs Golang question is just opinionated, and until there’s something better than activitypub there’s nothing even a fork can really do about those issues, and I’d really want the FSF to deal with those kinds of complaints.