Edit: I remember why - I wanted to use a single button dimming option, and as far as I can tell, there wasn’t that option in Shelly natively. There isn’t really a “native” version of this in Tasmota, but someone had already laid out the method to do such a thing with rules and whatnot within the Tasmota console. But after tinkering with it all this morning, I think I busted it beyond repair, so I might give the native Shelly a try!
Mostly because I’m lazy. This device was set up before Shelly made it so easy to run offline versions of the native firmware. And I’ve got a handful of devices already running Tasmota, so I’m just resistant to change.
It’s why I never say “eat the rich”, instead say: “compost the rich”. That way everyone knows I am serious about both parts of the ‘joke’.