Is the big problem - why should I have to give MS information (e.g. email address ) just to be able to install software on a PC and OS I purchased?
I do not care about curated stores (on android phone I side load stuff as Google store is same idea of wanting credentials so not used by me).
Just make it nice and easy to install software without needing the store (or have an anonymous user option on the store for any free software, which I assume Linux would be)
(Yes I know with MS mega slurp on non enterprise versions they may already know who I am / ditto Google on android (though rooting helps by allowing some crud removal)