Bitcoin was not made to spend. Not for now. There is a misinterpretation of what Satoshi wrote in the Whitepaper: "A peer-to-peer eletronic cash system". He created bitcoin to be an electronic money system. This is a fact.
Do not spend your Bitcoins. Not now.
From what you sites above is there any where is written that we should not spend the electronic money now until later as you said your subject line? I see nothing of such dude. If we don't spend Bitcoin now when should spend it, because spending and accepting Bitcoin is the only way value will be created and more adoption will likewise follow.