It’s a catch 22. If everyone uses it, game companies get it shut down, and then it doesn’t exist, and then nobody uses it. The only existing methods of piracy are little known. That you’ve never heard of it is expected.
I think they might be anticipating LLMs possibly being able to do a decent job at deobfuscation in the near future. This is an opportunity for Mojang to earn friend points. They might as well take credit for something that is going to happen anyway.
https://xkcd.com/1102/