If all you need is to turn it on and off, then indeed a SwitchBot mini hub is a really good alternative. It costs around $40, it’s very small, and it has an official smartthings integration with the new V3 app. I use this myself for an otherwise smart TV that isn’t smart until it’s been powered on.
I personally have never even tried to do anything else, though. My smart TV is a fire TV and once it’s on I use voice controls for everything. I know that there are some other people who have tried to use it as a full remote, and they have some discussion in the thread. It’s possible, but maybe not as elegant as the Harmony scenes were.
