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I deleted the following ...
""If white plays 8. 0-0 or 8. f3, black can win a pawn. For example, 8. 0-0 Nxe4, 9. Nxe4 d5, or 8. f3 Qb6. After, 8. Bb3 black can try to put pressure on the defenders of d5.""

... because it´s completely crap. After 8. 0-0, 8...Nxe4 is the best move, but as it was correctly seen by others, that´s not winning a pawn in any line, it´s just an equalizer. Regarding 8.f3 the article is a little bit less wrong. 8.f3 is bad for white after 8...Qb6, but still not losing a pawn by force.
And the sentence regarding ""pressure on the defenders of d5"" does not make any sense at all. Of course d5 is an important square in all dragon systems. But you don´t ""put pressure"" on the Nc3 or the Bb3. Sometimes (rarely in the line that we see here) you kick it away with b7-b5-b4, if white permits that. Sometimes you sacrifice the exchange with Rxc3. But you never put pressure on it ... you don´t put pressure on minor and major pieces in general, unless they are in a bind, or otherwise immobilized."