Let me fix that for you:
Interesting how totally making stuff up can make such a difference to new information
From the article: "Acidgen also provided suggestions for fixing the flaw." That would be FOR FREE. You know what, anyone who wants to can freely extort ABSOLUTELY NOTHING from me at any time. It really fits solidly into the "I don't mind" department.
In addition, he didn't make a demand that it be patched in a certain timeframe, he REQUESTED to know when they would release the patch so that he could withhold publishing his research until a fix could be deployed.
It sound an awful lot like he did all the right things. His FIRST concern was protecting the users of this software, his own ego was a close second. Even after it, apparently, has been patched, he still only disclosed the vulnerability, not the PoC code, WHICH HE APPARENTLY WROTE AT THEIR REQUEST.