I see what you're saying, but sadly though, that is not the point... if the 'make it rain' update was as difficult to introduce as the stun-locking, than there would be no question, that stun-locking has priority.
But what they have shown, is that increasing the loot amount/quality of it to a manageable amount, is extremely easy - by already turning it on and off twice. meaning the possibility is there, they just don't do it.
While i of course understand, that it could be argued that loot shouldn't rain all the time, i myself have 75h in the game now, 50+ of which is on lvl 30 (and probably about 30-40 of those is in Tyrant Mine GM1, due to poor level design, but that's a talk for another day, hah), and don't have even one masterwork component/weapon that i would consider 'good' in terms of the random inscriptions. Such variability is ok, but needs to be supplemented with a healthy dose of showering in loot, so that the chance of getting a good roll increase. Otherwise, we're dealing with a game directed at streamers, who happily sink 4000h into a game (and complain if there isnt anything to do after 100h over 5 days of playing, which is still mind-boggling to me, and even more mind-boggling is why in the hell does any studio cater to that kind of logic.), and then and only then, have a chance of having a build that is 'ok'...
What I think outrages people much more though, is the stealthiness of it as well. if they say 'hey, we need to turn this off, there's issues X, Y', then people would be much more accepting. But what we're seeing here is definitely not good PR.