That is absurd! Event Horizon is the only legit Doom movie.
That was the idea all along and they even used the sound clip from the spawn cube in the movie.
Also, although I am not a 40k fan, I know some people see this as a prequel to Warhammer 40k as the moment in which humans first get to use the Warp.
It was ruined by execs, but it is a masterpiece, especially in the production design.