For me there is nothing wrong with wireless. It is not about quota and max speed but it is about speed. Nothing can beat fiber.

Everybody talks about 5G has highest speed etc, but wireless is about signal quality. If signal is weak at point of reception, the the speed will be throttles down to ensure data transmission has less error. Even when signal is strong speed can also be throttled down because interference from reflected signal will cause error in data transmission.

When I use cable to connect to a switch port, I get 800Mbps on my speed test. However, when I use WiFi which is just about 5 meters away from my wireless router, I get only 300Mbps on speed test in room with no door and the router is visible from computer. 

I used to work in company that sell own branded wireless product and wireless router was one of them. I was in customer service and solved problem faced by customers. Well, my router probably not the latest 802.11ax but like many high end 802.11ac generation router, many 802.11ax have been incorporated inside the router even before the 802.11ax standard was ratified. I'm still using my old GT-AC5300AC and it can cover my whole two-floor house with at least 200Mbps.

The stupid thing is the antenna design. Small SMA connector but big antenna. Over time the plastic around connector become brittle and broken. Have to buy from China for replacement and it is not cheap either around RM11 each 

When I looked at WiFi6, the most significant one probably just multiple upload which WiFi5 does not support. I'd just wait for WiFi7. Actually, I'd just delay my purchase to get better price and another main reason is if your device does not support new spec, what's the point to rush getting new upgrade.

I checked the GT-AC5300 yesterday on Shopee and to my surprised it was still priced at RM2000  . Maybe wrong shop. I bought at least 2 years ago for probably RM1500 (could not recall)