I assume the point is that by requiring a phone number it's a drop-in replacement for WhatsApp. There's no need to register an account, just install a different app and you're good to go.
It's not the biggest barrier, but for some people it is one.
I've been pondering about this because and feel the need. I don't have any solar, but I'd like to play around with local AI a bit. I don't even have the hardware at the moment because driver support isn't ready on my laptop.
I'd even like to try a coding agent to find out if there are any useful cases. I don't want to do it in the cloud though. So I thought it'd be cool if someone with cheap or excess electricity could provide their hardware. I think it's quite a challenge to do that, though.
Right now I'm thinking, maybe running a decentralized Libre Translate service or something similar could be a nice project. Mastodon uses this for post translation and self hosted instances could use it as a translation service. Somewhere, the sun is always shining on someone's roof with solar, cheap energy and a spare GPU, I assume. I don't think it makes a difference if a post is being translated in Australia when I browse my timeline at night in Germany.
Peer Tube video encoding could also be done like this.
If anyone has links to ideas about decentralized data centers or whatever that would be, I'd be very interested. I think it would also help with protest against data centers being built, because it's nice to be able to have examples for alternatives. A way of using what's already there without building a grid only big tech and the fossil fuel industry need.
Without relying on the internet, people could offer to back up BluRays for friends or the community. Or optimize the hell out of HomeAssistant to run Jellyfin tasks and stuff when there's lots of solar.
I can recommend Forgejo, it's not overly complex in my opinion. It is what I would call "simple git server + decent web UI" for a home lab or VPN.
The reason Forgejo was forked was because of Gitea's focus IIRC, maybe it was stuff like having 3D file previews. It's not even the worst feature though, I can imagine it's quite helpful in projects with a focus on 3D data.
Edit: Just had a look at the reasoning behind forking from Gitea:
We started Forgejo in reaction to control of Gitea being taken away from the community by the newly-formed for-profit company Gitea Ltd without prior community consultation, and after an Open Letter to the Gitea project owners remained unanswered. The Forgejo project has two major objectives that drive our development and road map:
The community is in control, and ensures we develop to address community needs.
We will help liberate software development from the shackles of proprietary tools.
Simply put, the governance and development models of Gitea and Forgejo diverged over time, and so did their goals. Becoming a hard fork is the culmination of that divergence.
I think you should keep it ready.