Mozilla Firefox – Official GitHub repo

I think it's actually an understandable strategical move from Mozilla. They might loose some income from Google and probably have to cut the staff. But to keep the development of Firefox running they want to involve more people from the community and GitHub is the tool that brings most visibility on the market right now and is known by many developers. So the hurdle getting involved is much lower.

I think you can dislike the general move to a service like GitHub instead of GitLab (or something else). But I think we all benefit from the fact that Firefox's development continues and that we have a competing engine on the market.

In my experience, most contributors who are deterred from contributing because they can't use GitHub aren't particularly valuable contributors. I'm sure there's exceptions, but I haven't seen any for non-trivial open source projects I've been involved in. I might even argue that it could be good to have a slightly higher bar to deter low quality one time contributors.

You just showed the poster-child of gatekeeping that is harming Open Source.

Every contributor is valuable, it's in the name, the definition of "contribute".

Any bar to entry is bad, it certainly never is the solution to a different problem (not being able to manage all contributions). If anything, in the longer run, it will only make it worse.

Now, to be clear, while I do think GitHub is currently the "solution" to lower barriers, allow more people to contribute and as such improve your Open Source Project, the fact this is so, is a different and other problem - there isn't any good alternative to Github (with broad definitions of "good") why is that and what can we do to fix that, if at all?

Not all PRs are created equal.