If you as a developer wanted a non-technical user to test a thing you fixed for them, you could ask them to try an AppImage from your CI pipeline and they would easily be able to install it. They’re great for that.
Also, trying out a package can leave unwanted system state around in traditional imperative system package managers. AppImages OTOH are self-contained and user-installable.
That and ease of deployment.
If you as a developer wanted a non-technical user to test a thing you fixed for them, you could ask them to try an AppImage from your CI pipeline and they would easily be able to install it. They’re great for that.
Also, trying out a package can leave unwanted system state around in traditional imperative system package managers. AppImages OTOH are self-contained and user-installable.