Only if you need them, which seems to be the case of people into progression raiding, who are being benched or not being accepted into groups because of not having them.
This is a problem tied to RNG losers and has always been present in the game.
Did you belong to the 3% people who still did not have his BIS trinkets in past expansions? you were royally fucked.
Also nighthold being designed considering you have a certain amount of legendaries sounds like a very bad idea.