Your points are valid, and in fact you're even forgetting some of the game's flaws like some senseless backtracking devoid of any enemy or the awful VA with a faggot voice.
However you're being very harsh on the game.
Deep Fear is actually one of the best RE clones, how many have you played?
>the 3D models look great
>movement is great, hit detection is tight, animations are smooth
>the game is functional and not broken in any way
This is more than can be said of most RE clones.
>the survival mechanics aren't good
Yeah, not a SINGLE RE clone got that part right, not even Silent Hill.
tl;dr Deep Fear isn't great, but if you think it's shit, you need to play more RE clones. Evil Dead on PS1, AitD4, Martian Gothic, Countdown Vampires, etc all of these are broken in at least one way