My reaction to this is simply connect an ESP32 to your garage door opener and automate the ESP32 through whatever home automation protocol you want. ESP moduals are about $4-8 dollars, have WiFi, bluetooth and a huge library of software you can use to talk to it.
Personally, I won't use any cloud based automation system simply because I don't want to get in that situation where the provider can no longer support the protocol. The OP is 100% correct.
ESP32
I'm addicted to them...
I would characterize it as more of a hoarding. I'd buy 10 at a time because they were so cheap. Then I'd find even cooler versions and buy 10 of those too. I had no projects in mind but bought them because I didn't want to be stuck with no supply, like Raspberry Pi.
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