That's pretty poor analysis. The existence of an issues list on GitHub doesn't automatically mean that the issues are valid, and the 2nd random one that I picked was someone complaining that fetching a package with FTP didn't work when the network was down. In 2021.
If those are any indication, this is an issues list where no-one gets rid of the rubbish, and it thus its existence alone tells one nothing at all, as one probably is going to have to weed a whole bunch of very clearly non-bugs out to determine if there's anything left.
That's all well and good, but Minix is not "done", no one involved with Minix is billing it that way, and no one who knows anything about the current state of things would let anyone who tried to say that get away with it.
tambourine_man posed a valid hypothetical, but that's all it is: hypothetical.
* https://github.com/Stichting-MINIX-Research-Foundation/minix...
Then this one turned out to be a chat request.
* https://github.com/Stichting-MINIX-Research-Foundation/minix...
And this one the author actually asked to be closed, because the problem is fixed. It's still open.
* https://github.com/Stichting-MINIX-Research-Foundation/minix...
If those are any indication, this is an issues list where no-one gets rid of the rubbish, and it thus its existence alone tells one nothing at all, as one probably is going to have to weed a whole bunch of very clearly non-bugs out to determine if there's anything left.