I have a fitbit watch, I got it before Google decided to grab hold of them. the one advantage and the only one I see is the ability to use Google pay, which means my bank card works instead of me having to put my bank card onto a curve card and then the curve card onto my Fitbit watch.
I like my fitbit watch more so for the battery life, I can go for at least 2-3 day without recharging it, something from which I have heard can't be done with
Wear OS watches, also as far as I can see
Wear OS watches are always round, while that is a great shape for your normal watch I don't think it is for a smartwatch.
My fitbit does have a crack in where I dropped it months ago, I did think about replacing it, but to be honest I am not sure now what to do, I may just go back to a normal watch, I don;lt even know why I got it in the first place.
I will see how things go and how long mine lasts before it starts falling apart, but I don't like the pixel watch, too expensive and I want something where the battery lasts more than 24 hours