I totally get your point.
in saying that - I really like being able to adjust a bass to fit to me.
The running joke is that whenever people play my basses they buzz and rattle...’unplayable’.
if the neck is “set” the parameters for adjustment are also set.
The neck off truss rod adjustment is a poor design and apart from period accurate reissues - I don’t see the point, in fact I don’t think they exist outside of that genre.
And if you buy into the reissue thing you have to take it on the chin.
the shim thing - if done properly...can be very effective.