I agree with your assessment, but only when they are initially set up. Wait a couple months after the derailleur cables stretch and it needs adjustment. You can still trim with grip shifters without fiddling with cable adjustments. Not so with triggers. I like it because I'm lazy like that. lol!

I think the problem folks who say "I was constantly shifting when I didn't want to" (quoting adclark) are experiencing is that they're using the shifter as an extension of the grip to hold onto while riding causing the unexpected shifts. If this is the case, using a standard grip rather than the included grip shift compatible shorter grip could alleviate the problem. I use only the fixed grip to hold onto then move my hands ever so slightly inboard to perform the shift. Just my speculation of the supposed "problem" some have with grip shifters, could be wrong.

FWIW, I do run Sram front triggers on two bikes. A X.9 trigger and an older 9spd Rocket (shimano) trigger pod. They work OK, but not as well as the X.0 (8 & 9 spd) stuff on my other bikes.