You can keep feeling negative, but this isn’t the place for that. Nice try, but you are in the minority here and these sets aren’t special. Challenge Mode sets, I would argue that you had to earn them on that class, even though I do want them on all, but only have them on one.
Those sets are time-gated, these sets are not, so there’s no point in keeping them as they are as the game has evolved. So those who didn’t farm any of the sets then, and those who didn’t explore the other covenants, will now be more inclined to go back to SLs to get the sets, making the unpopular expansion more played.
Enjoy being negative. I hope your day gets better. 