Preliminary results indicate the difference might not be so bad, especially if you use 160 MHz channel width. This will be more practical in 6 GHz since there is no DFS to hassle with and the channels are there.The reduction in transmit power is going to be annoying and will likely force the use of mesh systems for a number of users that didn't need it so far.
External antennas are fine. Look at the ASUS GT-AXE11000. They just can't be user upgradeable.Non-removable antennas could also be an issue, depending on how the manufacturers handle this. External non removable antennas, or internal antennas only? The second case will hurt even more.
In the US outdoor APs will be allowed in the UNII 5 and 7 bands. Probably reserved for business lines due to the registration requirements for standard power equipment. In Europe only 25mW very low power APs will be allowed outdoor.Great article and overview.
My main takeaway was that I'm not going to (ever?) be able to upgrade my Orbi RBR50/RBS50 and RBS50Y outdoor satellites to Wi-Fi 6E due to these new Low Power rules preventing weatherproof enclosures. I found it odd that Netgear never made a Wi-Fi 6 version of the RBS50Y, and now it seems I know why.
Very frustrating! Having stable outdoor Wi-Fi coverage is critical to enjoyment of my home. Switching over to LTE/5G is not an equivalent option when I'm in my backyard, as many of the devices I want to control are LAN-only.