The real issue is that airplane mode should really only affect cell signals now and leave WiFi alone since planes have WiFi now and a lot of applications share between devices with WiFi, and leave Bluetooth and NFC alone since they’re short range and low power and unlikely to cause issues.
I'm not sure how common it is, but my S22+ will remember if I turn bluetooth or wifi on while in airplane mode, and leave them on in the future. That's especially nice since I use a CGM that pairs to my phone via bluetooth, so I don't have to worry about accidentally losing that connection.
Spot on about there not being any point in having cellular service enabled. You're 6 miles up and traveling a mile every few seconds, so you might as well just shut that radio off and save a bit of battery power.