No, Assassin's Creed Mirage won't have a subscription model or let you pay to block ads
www.pcgamesn.com
Ubisoft has confirmed that Assassin's Creed Mirage will not have a subscription model or in-game purchases to block ads, after confusion around a German rating.

Ubisoft confirmed that no, AssassinsCreedMirage will not have in-game ads you can block with your money or a subscription model, but it will have cosmetics.

I can not believe this is something that has to be confirmed.
Also screw microtransactions, especially in a single player game that is said to not be a live service.