Veilid is a peer-to-peer network and application framework released by the Cult of the Dead Cow on August 11, 2023, at DEF CON 31. Seems more promising than I2P.
Yep, that's exactly what's happening here. And it just keeps happening. What's weird is they explicitly mention TOR and IPFS, then go on to just re-implement it. There's no mention of why.
Also, as someone pointed out in the comments on the video as well as here, you say
Stop being dependent on corporate systems
yet you're on discord and twitter. Why aren't you eschewing those services? Discord can be replaced by matrix, signal (which also has groups), zulip, maybe even rocket chat! Gitlab is fine, but you could also be using radicle (granted, 2 years ago they weren't anywhere close to their current functionality).
Yeah, they can build on top of I2P. There's no need to rewrite all that stuff. They could've written something that glues everything together and reuse the existing nodes instead of creating yet another network.
Also, I2P has implementations in Java (main implementation) and C++ (i2pd). A rust implementation would be great news.
If we are talking about the most promising stuff, I will mention gnunet is basically replacing the entire internet using all the existing hardware. I think that is the end goal, but short term yeah, i2p and others are a great next step.