If the originals were destroyed nobody would have anything to compare the restored versions with and hence they would become the defacto masters.
Also, if every copy of DS9 on DVD was destroyed and all we had were the shitty VHS copies people taped from TV, they
would become the de facto masters and anyone who complained about their awful quality wouldn't be able to prove it!
It is unlikely that dvd copies would get destroyed due to proliferation.
But you get the essence of the idea that too much detail is bad and would not contribute to any further enjoyment.You don't really want see skin blemished and nose hairs.
PEOPLE GO TO SEE A STORY.
Enjoyment as you may not realize has a plateau level above which it cannot increase.
for example suppose we increased detail by using magic to 3d level.would that makes nemesis any better?