Packaging applications is a hard work so they obviously want the devs to do it themselves. For example, canonical push hard so their users use snap for firefox because it’s maintained by firefox devs themselves. Firefox updates very often and has complex build system, so I think canonical is tired of allocating significant resource to support it and want to stop maintaining firefox package if they can.
None of the the benefits you state apply to something a distribution provides and so I don’t understand why Ubuntu is pushing them.
Packaging applications is a hard work so they obviously want the devs to do it themselves. For example, canonical push hard so their users use snap for firefox because it’s maintained by firefox devs themselves. Firefox updates very often and has complex build system, so I think canonical is tired of allocating significant resource to support it and want to stop maintaining firefox package if they can.