Powergamers tend to settle on things they have calculated to be maximally optimal. In this game, they’ve pretty much decided that is limited to pool options with optimal +defense and +recharge utility.
There is a vast gulf between “not maximally optimal” in that sense and “not potent, useful, or worthwhile”. You may only realize this when you actually bother to forego some of the powergamers’ choices once in awhile; some people will never see it because their brain simply throws an error when you tell them they don’t need soft capped defense and all 5 LotG bonuses to do exceptionally well.
EDIT: saw your mention of Poison builds with RoP. I have 6 level 50 Poisons and I would be completely comfortable scrapping without Clarion, Melee, or RoP. So... not sure how that’s meant to be convincing.