You don't have to worry about that, recital 19 of the bill literally prohibits the use of this bill as a way to excuse prohibiting the installation of 3rd party software:
So based on your logic: Apple, Xiaomi and Samsung have been illegaly not allowing bootloaders to be unlocked in smartphones since 2014, impeding third parties from flashing custom software into the hardware, hence disrupting market competition?
How do you propose anyone litigates against these companies, if they are legitimately complying with 2014/53 Article 3.3(i): having features that keep their radio equipment with software that is compatibly demonstrable???
Reminding that this is about Delegated Act of 2022, which is an ammendment (by "Queen" Ursula) to, and redundantly cites, Article 3 of 2014/53.