I'm buying a WiFi router for a new house. What would we get from using a router that works with OpenWRT, versus just going with Wirecutter's top pick?

Since we upgraded to fiber, I'm pretty happy with the network speeds at our current house. We don't have WiFi 6. I'm fairly unlikely to mess with advanced networking features as long as the networking just works.

The new house will also have fiber. The previous owners left us some kind of mesh networking devices, which I need to go look at tomorrow.

If we did go with OpenWRT, is there any particular recommended hardware?