I'm not sure I agree. I don't like those two solutions. They basically try to centralize the platform. I think Lemmy is a little confusing at first, but that's a UX/UI problem and not necessarily a good enough reason to change underlying features of the platform.

I think a user subscribing to communities across instances is a pretty tough technical challenge and it would be very difficult to manage. How are particular communities decided to be a part of a multi-community? Is it voted on? Is there a mod of the multi-community? If so, that could still lead to bifurcation wherein you now have a multi-community that claims to provide all /c/pokemon content across instances but is potentially missing many viable communities on some instances due to things like moderator in-fighting or moderator preferences.

I like how Lemmy allows for sort of duplicate communities. Reddit already had that issue and people naturally flocked to the communities that had the content that suited them. I think it would behoove Lemmy to stay away from trying to centralize it all.

However, I agree that it is confusing. I think this is a UI/UX challenge which needs to be solved. I don't have the solution, but I think it's clear that the app language needs to help users naturally feel comfortable living within an instance and moving across instances.

I am open to suggestions and I am fully happy to be proven wrong. But as a software engineer, the second GitHub issue gave me the heeby-jeebies on a technical front. Seemed a little hairy for a young platform to take on right now. I think there are plenty of other lower hanging fruit id prefer for the community to solve:

Building a nice mobile android app Jerboa is pretty good but it needs some TLC. Timeouts happen frequently on my app and crash it/erase content I was reading
Provide better documentation/marketing materials for new users. I'm open to the idea of a centralized website where users can go to create accounts, learn about Lemmy, and maybe initially subscribe to popular communities

All in all though, I feel like Lemmy is totally usable. Actually, the most confusing thing to me was learning that I could see my comments and posts on Mastodon. That threw me through a loop. I still don't understand Mastodon since the UI - to me - just seems to be random comments. I don't really have any thread-based context to understand the comments I see on my Mastodon app. So for now I stick to Jerboa.