Does Eero require a cloud account to manage their routers? I bought Ubiquiti Amplifi simply for that reason. Working great.

Yes, and it's by far the worst thing about it. Reset your router while there's a cable outage? Sorry, no wifi until your cable company gets the internet connection back online.

This hit me when I moved recently. I would usually fall back to just accessing the configuration on my phone's cell connection, but 1) the house I moved to has poor reception for my carrier and 2) the cable enters the house in the basement so even less signal. Cue several rounds of climbing up and down the stairs.

What? That's ridiculous.

I switched to Ubiquiti products a few months ago and am quite happy with it. Lots of settings, modern UI, and no cloud required. I even had fun placing all the APs and whatnot.

Agreed. I've got a full UniFi setup at home and setup an AmpliFi network at my brother-in-law's house. Great gear. The range on Ubiquiti blows my old Meraki gear out of the water. I spent years tweaking settings on Meraki and was always unhappy with the range. I blamed it on everything except the gear until I replaced it.