[TheRealPomax]

And my response is still "why should they"?

Mind you, that's in part because of the ambiguity of the term "should": are you using the "should, as in nice to do but not required" or "should, as in required, and not doing it is wrong", because I'm on board with the first, but that is not how the original comment reads. That reads more like everyone should be familiar with multiple paradigms and not following that rule is bad. Which the real world heavily disputes.

[ebbv]

I think it's pretty clear from my comment that I'm saying should in the same sense as you should not smell like a dumpster on a hot day and you should be nice to work with.

Technically it's not required, but if you don't then you're lazy and probably not a great employee.

[mannykannot]

If this discussion is about the use of the word "should", then it has been a waste of time.