Disabling (switching auto-join to off) also does not work, most of them switch back on a few minutes later. This seems to be carrier-dependent from the comments thus far.

I disagree based on my reading of the documentation, these are treated as identical to your other networks. The only benefit is my home network is usually louder, but that’s the rub it doesn’t always work and devices routinely switch.

In my case I noticed this in a condo, so the physical distances are less