I used to obsess over this (dbm value). Now, I prefer to just have a rough idea via the signal strength bar. I find I don’t fret over it as much. Sort of like watching the fuel economy gauge on my truck and worrying about whether it’s 18.1 vs 18.3 mpg. I prefer to just turn the display to something else so it doesn’t distract me.
Yeah, I have issues.
It sounds like the same argument being made by some who say it isn't a big deal that the iPhone X is missing the percentage of battery remaining. Don't get me wrong, I don't completely disagree. I actually didn't have that much of an issue with the percentage being missing from the X -- I could still get a good idea of the battery life left from the icon and checking the exact percentage was easy to do. (either swipe left or down). Trying to find my signal strength, if I felt the need to see, was not as simple.
So, while I agree in principle, I do understand the desire to have a percentage of battery or a signal strength showing in the taskbar -- and do feel like it is an option that should be given.