It's not that they don't want to rely on Microsoft, it's because they don't want to rely on software that is beholden to a foreign country.
"The minister also added that this initiative isn’t solely about Microsoft. Instead, it’s a step toward reducing an over-reliance on just a handful of providers."
There should be better competition among OSes, we've seen what improvements can come along when something like Steam Deck is on the market. It would be better for everyone.