Samsung only had locked bootloader in the US market because of the carrier mafias in the US having wayyyy more power than they should have, even over OEMs. They can’t charge you extra for basic features if you can bypass the artificial locks with root empowered tools, or shove adware/bloatware down your throat if you can remove them, can they?

All other market’s models always had unlocked bootloader, even their China/Hong Kong and EU models. Although it’s still not entirely open because Samsung have extremely customized ROM, that also have Samsung’s security suite Knox and Samsung Pay deeply integrated all over the place, where a lot of encryption and obfuscation were included, because they are purpose designed security solutions. So with bootloader unlock you are still going to lose a lot of core OS features (even if you don’t actually mod the boot image to have root access, and just have the bootloader unlocked), there are tools that can restore some, but not all features can be restored.

Well that is, until now, apparently.

But then, on the other hand, Samsung devices are the closest you can get to Apple’s ridiculous walled garden in the Android ecosystem, so you’d you ever want that nonsense anyway lol