Umm… pirating windows is your recomended solution?
Look don’t get me wrong I could say it’s if anything more cost effective for simply the dev’s to say “OK anyone who has more than 1 hour of linux play time prior to this date qualifies for a refund”.
Of which, most likely is a handful of people so easy work.
Screw privacy sensitivity that’s a moot point. Installing windows isn’t a minor tweak to a computer .First of all the suggested method is technically breaking the law. Secondly you are talking minimum adding in a windows partition, so an extra 50 GB storage on top of the amount the game takes. Comprimizes to the boot loader on the system, in which there’s a high chance of messing up an existing install.