Do some byond games count as abandonware?
There are some games dead for over 10+ years.
Could those games hubs be reused somehow?
For example the hub key be removed so anyone can host a version of a dead game?

There's a channel for this in BYONDiscord called #abyondonware.
Some of these games do count as abandonware, IMO, yes.

I do not think we should allow the reuse of hub entries. I would rather see people spin up new hubs and host the files to those abandoned projects there, personally. That said, it'd be nice if long-since-abandoned games were no longer prominently displayed in the Games list with no sort active. It's a bit... Disheartening.
I think if youve got the Hub key then you're welcome to use it... but if you haven't then make a new one