No, in fact we couldn't. Account sharing are platform-specific and none of the platform holders would remove the feature for us alone. We tried to explore that possibility and it wasn't doable.
We aren't removing any feature with it because if you purchase the game you get Temtem+ by default, included, in any platform, physical or digital version. Only people who had not previously purchased the game need to purchase Temtem+, and even then, it's cheaper than buying another copy of the game.