Things just need to "look futuristic". The don't actually need to have practical function outside whatever narrative constraints are imposed in order to provide pace and tension to the story.
I forget who said it first, but "Warp is really the speed of plot".
In truth, that was due to having a fixed sight-line and focal distance to the camera so any post-production LCARS effects could be matched-moved to the action and any possible alternative lighting conditions. Offhand, I can't think of any explicit digital match-moving shots, but I'm certain that's the reason.
As pointed out in that infamous Red Letter Media video, all the screens on the bridge ended up casting too much glare so they very blatantly used gaffer tape on them https://www.youtube.com/watch?v=yzJqarYU5Io . :)