> I sincerely question the value of a managed wifi system

I'm not suggesting that there's necessarily value in "managed", but your parent comment was about the Ubiquiti product being overkill, which is a much broader statement.

The GP certainly advocates for management, but that's neither the primary value delivered by the overall product, nor the majority cost (even with a single AP). IIRC, this may not hold for competitors, such as Ruckus, where even the lowest-end "controller" is quite pricey.

> wifi should function without the need to phone home.

AFAIK, Ubiquiti's products can be run standalone, only requiring management software for initial configuration.