I agree that's one of the alerts that bug me. I have wifi off for a reason, please don't nag me on it.
"enabling WiFi will improve location accuracy"
Apple sure loves that location accuracy. Wonder why.
The one that annoys me the most by far is the "Cellular Data is Turned Off for "<App Name>" message.
It's like "Duh! I turned it off for a REASON! Maybe I don't need you reminding me every freaking time that cellular data is turned off for my Calculator app when I use it while not on Wi-Fi.
The most annoying thing is that Spotify pops up with that message every single time I initially open the app even when I'm on Wi-Fi. Someone explain that one to me 😕 *facepalm*