alt Hacker NewsFor the 6GHz frequencies used, this isn’t really as big of a deal as everyone has made it out to be. The advice was shared in the early days of 2.4GHz WiFi with into 3 non-overlapping channels, higher penetration of 2.4GHz signals, and competition with all of the other cheap devices in the 2.4GHz space.
The 6GHz space isn’t even competing with classic WiFi. It’s really fine. There’s no prisoner’s dilemma or some moral high ground from setting it to low. It will make virtually no difference for your neighbors.
The real world difference is actually pretty minimal between power settings.
The actual risk with modern hardware is that the high power setting starts running the power amplifier in a higher distortion area of the curve which degrades signal quality in exchange for incrementally longer range.
Also, the higher frequencies are much more affected by absorption from little things like "walls" and "trees" which are occasionally part of the RF environment, so you're far less likely to interfere with your neighbors doing this, than you were with 2.4GHz.
Also the reason it makes such an enormous difference to put your AP in the same room, if at all possible. Sneak a cable somewhere, park the AP in the far corner of the room, sure. But with zero walls in between, it's huge.