And tell you the only way for experience X is to follow these safe steps to unlock your phone and use their launcher.
A freedom of choice has to be a freedom to choose. As I said farther you the thread, this immediately becomes an "and" rather than an "or".
"I can install this app via my preferred storefront" is a fine choice - but "I have to use all of the services that every third party wants to bundle in to use their specific service" isn't a choice, it's forced upon you and is no better than the situation we have now. We've seen this on android - try and install the Google camera app on a Huawei device and let me know how that goes for you, or use the Samsung app store on your Google device.
That's not a choice, and it's no better than being forced to use steam in the first place.
But none of this is Microsoft's business. That's the important part.
Because it's not user choice, it's publisher or developer choice. If I want to play Fortnite, I don't have a choice to play it on steam or EGS, and similarly if I want to play league of legends,I can't play it on steam. This sort of "choice" isn't a choice for the user, it forces them to be subject to the data protection and whims of every publisher whether they want to or not.