enten

I don't want to push a fork related to a DMCA takedown notice.

And it seems that some repositories disappearing from gitlab too (example: https://gitlab.com/lax1dude/eaglercraftx-1.8).

Eaglercraft is a proof that it's possible to apply changes in Minecraft Java source and wasm-compile it. Isn't that so cool?

The main developers of Eaglercraft have done great work that deserves to be archived. And it seems that it isn't illegal to do reverse engineering on Minecraft Java Edition.

I don't known the community around Eaglercraft, but I guess that the illegal issues come from people who don't care about software development and serves tons of static sites with Eaglercraft client but mostly ad$.

I don't think that Eaglercraft is illegal but some uses are made of it. Spigot and other servers are not illegal. But if someone publish a software for dev purposes to run Spigot server which allow to join without mojang auth: this is where that dishonest persons comes in.