Why would anyone even use a Fire TV compared to other alternatives. It's a giant ad screen on your TV.
No other stick-like device out there "just works". I've tried so many of them over the years, but they all have issues ranging from the irritating to the unusable. I had high hopes for the Nokia stick, but it couldn't even connect to WIFI.
I plug my FireTV Cube into my projector. It has some kind of smart TV functionality and a second remote to go with it, but it's on a dongle and I don't plug it in because I don't use it.