This is an ever growing problem, so many “Premium Plugins” or just regular plugins that I use, are Hijacking the WordPress Admin area.
They try to pitch you even more services to buy or some make announcements that I could care less about.
Honestly, I don’t know how the community feels, but I personally think this is very annoying at the least, and very disruptive.
Having splash ads commercials blasted should not be allowed. The maximum plugin should get is maybe 3 to 4 lines and it should be used judiciously, only to communicate critical information.