Korea is extremely class conscious and people treat people differently based on perceived wealth. iPhone being considerably expensive than Samsung offerings in Korea is an instant wealth signifier and having an iPhone means you are perceived as upper rich class than those pesky poor Samsung, which is now associated with old people or who couldn’t afford an iPhone.
Well Windows 10 at least lets you create a local user account. you can’t even install windows 11 without having a microsoft online account, because you need a Microsoft account to be able to create a local user.