I'm going to assume that I'm going to have problems finding people using this, given the docs say only 38 installs are using it, but I had a Switchmate toggle switch thing laying around from before I realized how bad it is, and hoping I could get a bit more use out of it via HASS vs its ecosystem. As far as I can tell, just adding the required lines to the config is all that's needed. I do have both a Bluetooth dongle in the system running HASS and a ESPHome BLE proxy for good measure, but it only show up as unavailable.
This is my config entry for it:
switch:
- platform: switchmate
mac: "c4:81:f8:60:25:41"
name: "Bathroom Fan"