Can confirm the cheapo Honor 3 router with Wifi6 improves Quest 2 streaming significantly.
I set it up as an access point to my existing router (which unfortunately I have to use since it has the modem built into it) and my WiFi speed shot up from 886Mbps to 1200Mbps and my latency dropped by a whole 10ms overall. (20ms on desktop and 30-35 in VR on AMD hardware) 
Very impressed with something that cost me only £50. 
(I mean I will buy a better router eventually and shove this one upstairs as a secondary)