The Microsoft store has more garbage than the Google and Apple stores all combined.
I don't like being told what I can install, but it certainly reflects badly on the platform if the store is cluttered with a bunch of scammy trash. The whole benefit of the walled garden arrangement from the user standpoint is having a collection of vetted apps that meet a certain bar in terms of quality. If they're going to let second tier crap in there it should at least be in a separate area for advanced users.
Since I like to be able to install whatever I want, I use a PC where I have full administrator privileges. For my phone I care less, as long as it supports the handful of mainstream apps I regularly use, I don't really care if I can install other stuff.