Yes, precisely my point. Hence the phrase "rooting without rooting". If it's possible use this vulnerability to arbitrarily rewrite the contents of any or all

Yes, precisely my point. Hence the phrase "rooting without rooting". If it's possible use this vulnerability to arbitrarily rewrite the contents of any or all of the APKs loaded onto a given phone, then this flaw allows for the ability to engage in a key behavior that makes rooting Android popular: Disabling all of the unwanted bloatware that device manufacturers usually prevent you from deleting.