I doubt they do mich different than you do with their OS.
People are more motivated by feelings than actual logic. The person you are responding to even states that Ubuntu “feels good to use”. That is some car advertisement level of feeling based reasoning.
Another thing is that people really hate it when things change. Especially a UI change. Every change in the Windows UI has been met with disgust. And if there is one thing different between linux distros, it’s where they place all the buttons, menus, etc. So people prefer to stay with the distro they know.
Reddit was a decent solution, till it enshitified to make money. Before then, it was already flooded by the masses. Clearly their method worked fine. Not perfect, but at least fine. So I don’t see why the masses are the problem. I personaly put all the blame on the need to make money of a vital piece of digital infrastructure.
The tricky part, is that we also cannot put it in the hands of a government, since it can become a tool for propaganda. So the EU hosting something like reddit, would also create a conflict of interrests. I’m curious if we can find a good solution to this problem.