Ron Paul is old and intelligent enough to know what defines true money and what does not - that's his advantage. And judging from the excerpt he's bang-on with his statements.

However, he's very strict on the constitutional principles and the resulting requirements to fulfill them, which are very closely anchored to the original US coinage acts and require physical, intrinsic value.

IMHO BitCoin doesn't have to fulfill all requirements to 100% to be used as money in modern days. Since it has some potential improvements to FIAT (but carries other risks), it may very well be used as a FIAT substitute or as an alternative payment processor in some cases (international payments are it's greatest strengh). Based on what he writes, he has no issues with that ideas.

The ideas of some to use it as an outright replacement for a currency or even a permanent store of value are IMHO extremely far-fetched and out of the question.

PS.
Since he was the only presidential candidate who was not part of the staged, all bought-and-paid-for other muppets, alot of work has been invested to discredit him during the last "election" (which really doesn't deserve the name anymore) by all accounts.
One doesn't have to agree with all of his positions (which in the big scope of things and problems aren't too relevant anyway), but he's definitely by far the cleanest guy you'll ever find on these matters. Plus, he warned since almost 20 years of nearly everything we've seen to come into existence and has maintained his positions straight ever since (whether you agree on them or not) - go find another modern, western politician who truly lived up to that.