Wrong. The e in 6e stands for 6 Ghz support. It it is still based on the 80211.ax radio interface, but uses 6 GHz where available.
From a reputable router manufacturer TP-Link:
https://www.tp-link.com/us/blog/86/what-s-the-difference-between-wifi-6-and-wifi-6e/#:~:text=What is WiFi 6E and,to the 6 GHz band.
In fact, WiFi 6E is identical to WiFi 6 with an addition of “E”, which stands for “Extended” — as in an extended number of the usable wireless band, the 6 GHz band. So simply put, WiFi 6E means WiFi 6 extended to the 6 GHz band.
6 GHz is the new frequency band ranging from 5.925 GHz to 7.125 GHz, allowing up to 1,200 MHz of additional spectrum. Unlike the existing bands on which channels are currently crammed into the limited spectrum, the 6 GHz band exists without overlap or interference. Access to the 6 GHz frequency brings more bandwidth, faster speeds, and lower latency, opening up resources for future innovations like AR/VR, 8K streaming, and more.