Are quality components overkill? Never.
Some will consider whether a component encourages a rifle to shoot better, some will question whether it encourages it to shoot less well. I am with the latter; primarily because my interests are about something being 'adequate' as opposed to 'best'.
For decades I was constrained to be satisfied with what I could afford, and it was not the best. More recently, I can afford better things, and have indulged myself. I can't see any real difference in performance, and since I started out in shooting, I have habitually treated my equipment in a manner befitting something I could not afford to replace. This has tended to evade events where ultimate physical limits are repeatedly challenged; so some aspects of the 'best' do not come so prominently into question.
There is a place for 'best', and a category of shooters for whom the 'best' makes a practical difference. Unfortunately (fortunately?) I have never risen to such a level of excellence.
If that ever actually occurs, I promise to revise my standards.
Greg