FYI, the very recently released Marathon with the BattleEye rootkit works fine on a maximally trimmed down Windows 10 LTSC, which is what I'm running on my PC (personal console).

Windows 10 LTSC is not available outside of volume licencing.

That you pirate an OS they refuse to sell to you to get a better experience is your choice, but it's unrealistic to suggest that it's a solution for the average person.