I can't imagine that telnet versions of gameboy games are really going to take off in any capacity. That said, if you do choose to self host, make sure you protect the access in some way, or only distribute freely licensed homebrew, etc etc.
Nintendo has even used existing open source emulators themselves in commercial products.
Source? I'd love to read more about that.
https://waxy.org/2004/07/jaleco_borrows/
Nintendo has written or contracted a lot of emulators themselves. The grandparent may be thinking of the pervasive use of the iNES header format, which originated with an unofficial (though not open source) emulator:
One of the best projects from recent years that was handed out as inspiration was someone that built a game boy emulator, with the ultimate aim of being able to run Pokemon Red.
This dissertation was public on the CS site for about 5 years, with source code to run it, and although this was pre-GitHub Nintendo were still very litigious back then. No ROM's were provided, so I assume Nintendo either missed it, or didn't care.
forking is just a gesture, especially for obviously hot repos. a takedown of 1 can takedown all the forks
Even as a "backup", it's pointless, because it's all Copy-on-Write, there's no backup.
As if they never learned to use the "Star" button to bookmark...
Personally, I don't fork any repos unless I'm working on a derived program, or working for a patch, even so, I'll delete my forked repos as soon as the patches are accepted (if it's a one-time contribution), so these forked repos won't spam my own list.