What are you thinking here? a couple of hours and i'm done? Because this offhand comment would take me months, possibly years to actually be able to do. I know what I don't know - and it's a lot.
The assumption that just anyone can contribute and resolve these issues is extremely generous, and unrealistic. Maybe if you're fresh out of school, you have the time available to truly dig in. But when you're working a FT job, and have a side project, and a life - there is no time for such a deep dive with such little yield. Because not only do you not know the language, you don't know the codebase and you don't know the domain. That's an awful lot to catch up on to fix a bug.
I agree people can be more involved with the software they use. But I think that can play out in many different ways, suited for what each person can bring to the table.
I tried to get debian and its children & grandchildren to run on my PC, but all had issues. The most frustrating being mouse clicks intermittently not working. (seriously? 2017 and we can't figure out mouse clicks?)
But Fedora worked, it detected everything correctly, and I had a box that I could actually just start using and not spend hours (or days) configuring to get the basics working.
I would go so far as to say it's been relatively apple-esque in experience polish - when contrasted with most other distros. I've also had more stability and performance in general.
I still have nvidia screen tearing to sort out somehow. It's annoying but tolerable. But I also have way more control over my machine, and can change/do things that Apple would never let you.
Anyway, I recommend checking out Fedora if you're considering moving to linux, and have had troubles with ubuntu & co.