In my home network here in Spain I just turned off all my ISP router wireless and got two 2.4 APs with OpenWRT by ethernet in different parts of the flat. There's a lot of noise but honestly I'm fine with ~30mbps, and I don't get all the weird stuff that comes with 5ghz.
Everything that really needs speed is connected by ethernet anyway.
Agreed, even in a fairly low density street 2.4GHz is totally useless as it is so noisy, especially outdoors. 5GHz actually has better range due to the noise.
Hopefully Wifi6E equipment will come down further in price.
Everything that really needs speed is connected by ethernet anyway.