I know it sounds silly but i would like to have different apps for those two things, was thinking Fossify.

I have a pet-peeve of having apps on my list that is being used by other apps, like i have a different gallery app so i disable the default gallery just so its out of the way but still there if something goes wrong.

I cant do that with the camera, which feels strange. the file app i understand more.

Just wondering if there is a way that i am not thinking of or its just a really bad idea.

both provide system features outside of the basic app and thus should not be disabled, gallery is ok to disable

You can use a custom launcher to hide them