I think that it is more complex than it looks. First, separated dedicated account reduce the possibility to match it with other activities. And with a real Mic

I think that it is more complex than it looks. First, separated dedicated account reduce the possibility to match it with other activities. And with a real Microsoft account you have no choice than being forced subscribed to a dozen service that you don't care like email and co, and so easily being bounded with a lot more data points, privacy and terms conditions. But also you will be forced to login and remain logged with such an account to play. You can not anymore throw and change your Minecraft account at will. Now this will be related to your whole Microsoft account that could be harder to change because you depend on it for other things. Think of the poor souls that do login on Windows with their Microsoft account to be able to use their computer!