You forgot that you can use XM5s without battery, analog, unlike APMs. Biiiiiiiiiiiiiig difference.
I do own APMs and Beoplay H7, I can switch battery on H7 and I can use them analog as long as I want/need. Not having power button on APMs is just plain ridiculous.
I didn't forget about it, its just not an important feature to me. I use wireless headphones, wirelessly, exclusively.