I gave up on openwrt when I realized that a lot of the recent WiFi standards seem to be badly supported. I think 802.11ac was significantly faster with vendor firmware than openwrt, for example.

> 802.11ac was significantly faster with vendor firmware

Yes, I also remember similar issues with TP-Link Archer C7 running earlier versions of OpenWRT. It got better with later versions when they started supporting some kind of flow off-loading.

I am unsure if at the moment the recent OpenWRT WiFi performance of this router is on par with the vendor firmware's WiFi performance.

But yes, your point is valid. However, I do not consider this kind of issues to be deal-breaking. If I remember correctly, a fair amount of devices can achieve the same performance with OpenWRT as with vendor firmware. I would just check for these potential issues in advance and buy only the devices which are confirmed to be working as fast as with the vendor firmware.

The point here is that I rarely have any preferences as to which brand of a router to buy. Many of the marketed features they offer, like proprietary software or mobile apps to control the router, are mostly irrelevant for me. So I choose primarily based on the OpenWRT support level.

Edit: clarification

160mhz ax 6ghz working here with a mediatek chipset