In my understanding, the options need to be customized for each machine, as well as the fact that making packages for tons of distros can be a lot of work for solo or small team devs, and that's why some software is provided as .tar only.

but it seems like the install process on the user side could be automated to a single command or drag-drop, as long as the script would throw informative alerts for any errors and the user is prepared to take over manually.

does something like this exist in a standalone form that's not bundled like snaps or flatpaks?

if not, is there a broadly-applicable reason (security, damaging OS, etc) that makes it a terrible idea? or simply that no one has gotten to it?