There are different types of users. Those who want something to work out of the box and those who like to put in the work to make the os into something personal. Usually, at least with the people I’ve come across, if you give them something the “works” but if they can tinker and make it better they’d learn. Now, not everybody is like that. Some just want to browse the Internet and play games. Flatpak, while not perfect, is a solution to a problem. Not everybody wants to adjust config files and/or configure wine bottles for every game.

As for your comment about drobbins… I can’t argue. The greatest thing about Linux is the freedom to use what ever distro works for your needs. If switching from one because it doesn’t do what you want, by all means, switch. But, if you are more computer literate and like to learn about how the os actually works; it doesn’t matter which distro, you can figure out how to fix the problem and contribute to the community so others can fix it too.