Will keep my ax3600 till ax9000 reached reasonable price. Another thing bad about xiaomi router is no antivirus
Xiaomi AX3600 should be good enough for many users.
To be Frank, the so-called protection features solution on the Asus or TP-Link routers are mostly useless in reality.
I enabled Asus AIpropriation on my Asus RT-AX82U for a while and then disabled the feature. It detected nothing and just wasted CPU/memory.
You will be better off being careful online and then use things like Windows built-in antivirus features. So far I have not found the need to use extra antivirus apps under macOS, iOS and Android phones yet.
I do use Pi-hole DNS blocking and uBlock browser add-on as well as an added protection for the family members.