The DNS issue was the clincher for me, but I followed their instructions for disabling it and it reappeared when the router was rebooted (not reset).
Overall, I’m rather happy with my current setup. I bought the most recent SB modem available at he time, got an Edgerouter and a Unifi AP. Took a few minutes longer to set up than a netgear or whatnot, but was able to use POE to put the AP in a far better location (it’s actually under my sofa instead of the closet where all my wiring goes) and have had a far more reliable and customizable experience.