With an E2 front mech one of the limits is set using cable tension. My bike uses internal cable routing involving looping the cable through a pivoting piece of plastic housing. Cable replacements are not fun using it, and try as I might, I cannot get the chainline absolutely perfect with a 2×10 setup at the extremes. It’s as close as it can get, but the adjuster’s cable tension is at the maximum.
Also, with 1×10 you eliminate trim. Sure, the chainline takes fiddling with to get it right, but you’re under no illusions that it’ll be perfect. With 2×10 there’s that cruel hope that if you just fettle a little bit more you’ll have that perfect chainline the bike marketing pitches promised you!
I’ve also been in a situation where I’ve had a stack and binned the front shifter. Money, and time spent replacing it.
I look at 1×10 as a time saving measure. One less thing to fix, one less thing to break. Over time it should mean less time fixing stuff and more time to ride my bike. If 2×10 works for you then that’s cool. I’m just saying that for me there’s definitely a benefit to it.
If 1x doesn’t give you the range you want then you can always use it as a motivator to improve your fitness!