When I do this, with sources, I find some power user has reverted the change within minutes or hours without so much as a meaningful comment.

Not sure when it happened, but Wikipedia has long been a collection of fiefdoms, jealously guarded by power users and their sycophants.

If only said power users used their time and energy to fix content instead of just revert it.

Not in a million years. I am not touching that with a ten feet barge pole.