Nobody here needs “a long history of submitting patches to Firefox” to have an opinion on the tools used to manage the project. I assume that most here sharing their opinion don’t and yet you need not scroll far. You merely need some knowledge and experience with the tools, be it in personal, corporate, FOSS, etc. projects. Besides I don’t spend my free time helping FOSS projects just to use it to be like “my opinion better” that’s literally just the “appeal to authority fallacy”. But if you must know, I have helped here and there throughout the years under various different aliases/accounts. (Why “various aliases”? because I enjoy helping not some meaningless credit, it’s just how I am.)