Well, everyone probably does need to agree on what is off-limits for work conversation. Putting something like "Joe Biden is a communist" or "Black lives matter is just a front for foreign agitators" into #hot-takes is probably not something you want people getting into at work in most cases, right? (Note that I am not making either of those statements, they were purposely chosen to be extremely provocative.)
I think the original argument was a meat because a meat is a single, semi-solid, blob of a single item. Salads are non-mixed collections of goods and soups are homogenized(?) liquids.
Or did they collapse the state of matter for soups and meats?