Question why do some people care about it being on Steam so much instead of the Microsoft store? Its built into windows 10 for one so its not like you have to download anything to use the MS store. If anything you download it once from the store and it will open like any other program you have on your PC don't have to go through a launcher like steam just open and play the game it seems better to me.
I play FFXIV and there is a steam version of it and from what I heard its worse than the stand alone windows version cause it takes longer to start because you have to launch it through steam.
I can say you should ignore those people who say it is worse through Steam when it is not, I have the Steam version of FFXIV and by no means does it load slowly or anything like that, it loads the same as without Steam, the Launcher is going to be the same with and without Steam.