Doom in its entirety has been ported and re-ported to damn near every system except the Jaguar. I think it was just interpersonal drama. With no one else around anymore to aim their drama guns at they turned on each other.
Incorrect. Shareware DOOM is ported, then people that want the full thing have the option of replacing the shareware WAD with a full-game WAD (from a version they purchased, like on Steam). DOOM is a game that is still for sale and people offering the full game for free could face legal repercussions. The same thing goes with Heretic, Hexen, and pretty much any other FPS with id's name on it since Wolfenstein 3D.
Perhaps the game could
be made for free on an obscure platform like the Jaguar, if blessing is received/the project is condoned by the current rights owner of the game
(think Halo 2600), but if that isn't received then anyone pursuing this kind of project without going through proper licensing channels is putting themselves at risk.
Don't get me wrong though, I don't doubt interpersonal drama either. I've dealt with that portion of the Jag "scene" for more than I would have liked. Those guys can be egotistical, narcissistic, and downright bats*#%-crazy.