The challenge is exacerbated by the fact that the article limits the evaluation period to a limited universe of games and includes "hits," which I don't think are formally tracked, so we have to take the word of the observer. In addition, sack stats are usually presented only for the regular season; to get reliable full season numbers we'd have to factor in the Playoffs and I just don't have the time to fire up a spreadsheet today. But, on the assumption that the observer is reliable and looking at facts we can gather, here are a few things that we can discover.
Looking just at 2007, since that's the period from which the article derives its data, we can compare Brady's sacks per attempt for the full season to the sacks on other elite QB's; this doesn't include hits. Any analysis like this has to acknowledge, of course, that the playcalling and style of play of QB's differs (see Ben below). I get this from ProFootBallReference.com.
Sacks per Attempt % (Sacks/Attempts + Sacks)
Brady: 3.5%
Brees: 2.4%
Favre: 2.7%
Payme: 3.9%
Rivers: 4.7%
Big Ben: 10.4%
This suggests that, throughout the entire season, Brady was sacked roughly 46% more often than Brees, 30% more often than Favre, 11% less often than Peyton, 27% less often than Rivers and a lot less often than Roethlisberger.
But, the article talks about the latter part of the season and the playoffs. So, if we look at the first ten games, Brady was sacked just 2.9% of the time; for the last six games (Philly on as the article argues), Brady was sacked 4.4% of the time, or more than 50% more often than in the beginning of the season. When we look at the Playoffs, he was sacked 6.8% of the time, or 230% more often than in the first six games of the season and nearly twice as often as in the entire regular season. If we look at his sack percentage for the last six games plus the playoffs, it is 5.2%.
Since the article is accurate in its arguments about sacks, barring the presentation of alternative data, I'll concede that it is likely also accurate in its stats on "hits" and will accept that its conclusion is valid, barring the presentation of contrary data. From the 11th game on of the 2007 season, Brady was sacked and hit more often than before and more often than other elite QB's, other than Roethlisberger, were sacked and hit on average over the season. This is probably not a good thing.