I'm sure there's a distinction, but this is an anecdote, and the above link is specifically another person's anecdote. My comment makes fine sense, if you want to say they are completely separate products, it's probably unrelated just do that, don't be an ass.

Our IT department doesn't treat us like idiots, FF was an officially supported browser until a month ago, we were on the most recent version. I believe them if they say it's about webapp compatibility, even if this does help them manage the browser under group policy or whatever. They could make this decision for whatever reason they want and wouldn't have a problem getting people to go along with it.