[jjice]

I assume it's business people finding it to be a better "bang for their buck" implementation time-wise or lazy developers who don't use Firefox for their testing phase. I've seen it so many times. At a previous company, I was the only person using Firefox daily and I would catch bugs a few times a year during PRs for things that worked fine in Chrome, but not in Firefox. Oftentimes the suggestion was just to leave it because "who uses Firefox?"