It *is* garbage. The ones built into the garage openers work fine enough, even if they’re proprietary.
The ones sold as attachments for existing garage openers that use the reflector and light for communication are garbage.
Something like a ratgdo actually hooks into the garage motor and works well.
Here’s one simple example: if you don’t have connectivity (bad service, no wifi, internet’s out) your MyQ isn’t going to do jack.
Your ratgdo, which works locally, would be completely unbothered.
Add that to the company being actively hostile to consumers, and it’s garbage.