When was SmartThings good? I missed that. The only thing I use it for is an oven that, even though it is connected to the internet, can't manage to update the time when daylight savings time changes. To get the oven to update the time, you have to open the app, find the oven, go to Settings, turn OFF the "automatic time sync" option and then turn it back on again. Every 6 months.
I performed this ritual last weekend, and followed up by filing a bug report about what a shitshow the whole thing was from the feedback option in the app. I got a very nice message back from Samsung telling me my message had come to the wrong place and that I should do something different if I wanted to give feedback about the app. FFS.