Yes yes, 0.01% of the population loves complicated rotations with 20+ buttons, but for 99.99% of the player base we absolutely hate it.
Back in vanilla wrath, which is considered the best of wow with the highest amount of players somewhere in the 10 million range, my rogue had this rotation
Mutilate, slice and dice, mutilate, mutilate rupture, hunger for blood, mutilate - envenom.
Simple enough for even grandma. The class rotations were so basic that it wasnt even really a factor in a player’s dps so everyone could do it. Because of this, the difference between dps of the top players in the world and that of grandma were quite small and came mostly from min maxing gear, proper itemization and world buffs.
Look at retail today.
Give grandma a max level and geared rogue. Provide her with the 20 button rotation and have her hit a target dummy for 5 minutes. Her dps would be in the 20k range.
Now give the best player in the world the same rogue. Hell pump out 10-15 times grandma’s numbers.
This is the problem blizzard. You should agree that the max dps rotation of any class is 6-7 buttons. Then work on removing the other 13+ buttons