Honestly, people should just take a break from WoW if they feel the need to complain about the current patch. The ratings don't mean anything right now anyways, and then when the patch finally comes out you will be all pumped up to play.
sorry i played a bunch of games and this happened almost every game, it isnt completely "rng"
from what i understand rogues have a decent crit rate, all they have to do is get that trinket to proc then do their normal rotation
whats rng is if they get 2 in a row that are both crits