IQOO 9T supports Wi-Fi 6E but there is no such options in the settings to enable WiFi 6 Hotspot .

Your competitor ONEPLUS 10T with same snapdragon 8 Plus gen 1 supports Wi-Fi 6 Hotspot and the option present in the Oxygen OS.

I request you to implement the features of WiFi 6 Hotspot and WPA-3 security in the WiFi setting.