However, one strength they all share is: "you usually don't get .exe or .dmg"! Absolutely! Apps are integrated and not simply add-ons as they are in Windows or Apple land. When I want to install say libreoffice or wireshark I simply ask the system to install them. I absolutely do not browse the internet and download something, extract it and run some "installer". When I update my system, all apps and the OS are updated in one go.
My system is curated for me, end to end, to a greater or lesser extent. When I update, all my system is updated - OS, apps and all.
I don't think yours is (whatever it is).