I haven't looked too deeply into this yet. But I've started reading about the process.
Is there a reason you'd want it on steam over itch?
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Ease of access and achievements are a big incentive.
Plus, Itch is US based and charges us Europeans VAT on top of the selling price, instead of it already being included in the price. In Europe we don't pay VAT afterwards. So it's more expensive to buy games on Itch in Europe for no reason whatsoever.
An example would be if I were to buy a game on Steam for $32, it would cost me only $32 because tax is included. If I were to buy the same game with the same price on Itch - it would actually cost $39/$40.