I too will in part accept the argument - altho it is in part semantics.
If #1 is perhaps no longer called a rule but a ''way to go'' - I still find it more than adequate as something to remember - it is really in my book part of the ''don't assume (anything)" approach.
The reason I personally regard #2 as the singular ''catch-all'' - is that if #1 has been casually ignored as it so often can be, then at least any discharge would be more egg on face than hole in body!!
