You encounter the merchant where you can buy the MTX stuff in the first few hours of the game. You can’t even use the majority of them before reaching that point.

I would honestly bet money that they’d designed the game to not have microtransactions, then some executive at the 11th hour told them to find a way to include them, and they made them inconsequential as a sort of malicious compliance. Not that I think it’s OK to have them in the first place, it really soured me on the game initially. I think it’s considerably worse for including them, but they are completely meaningless.