The range I get for my backhaul is about the same as the 5ghz. It's actually better performance for me on the 6 vs 5. I've tried both. I just can't do 5ghz backhaul because I live like 5 min from an airport and it was intermittently wreaking havoc for me.
I would prefer to have ethernet, and I tried to get it installed when I first moved to this town and my current house. Small town and only guy who does it couldn't do it because of the firewalls in my house apparently. I would've paid him whatever he wanted. He just couldn't do it. Electrician said same thing about adding outlets. He had no access cause of the way they built my house. One day maybe I'll look into seeing how much an out of town company would charge to come in and do it, if they can. I'm just several hours from any companies that might be able to do so. So I went with the option available to me. The nodes are the only wifi 7 clients I care about, and all my important stuff is hardwired to the nodes. There is a significant performance difference from what I previously ran so clearly the newer hardware is doing something right. It was worth it to me, and I saw a post somewhere saying there's nothing in the spec that these shouldn't be able to do. It sounds like you found better value in setting yours up the way you did. I wish I could, just can't. I also don't think the average consumer is going to be doing all that either.