The mere fact there is a single knob for 'transmit power', rather than the transmit power being automatically determined by the clients location relative to the AP, other AP's, and noise sources tells you a lot about the maturity of WiFi as a spec...

I've seen that work well in open areas where APs overlap significantly, but in places with walls where you walk from one bubble to another, it still usually takes to long for a device to figure out it should switch and then actually do it. I've never had a video call even stutter when moving between LTE cells, but on WiFi, calls sometimes drop outright, even when walking down a long hallway with many APs.