Yeah, it was a joke and/or joky; I've played these cards,and still play 'em when the situation presents itself.

My overall thinking is like so:
-if you're good enough to play these profitably (Cf. ripptyde) then you already know this isn't a hard and fast rule, because you already know there aren't ANY hard and fast rules
-BUT, if you're not sure how to play these cards, don't. Hence the title.

If you've got a significant stack on hand as well as a psychological edge you can call with these cards and many others. If you don't, you can still raise them. But you're bluffing.