Well no one is going to like all of any authors stories. I enjoyed a number of Michael Crichton's novels, Timeline, and Eaters of the Dead are the ones that spring most readily to mind. As for criticizing the man's politics it would be a bit more seemly to wait for him to have been dead a while.
On the other hand given that the UN Climate Pannel has to continually downgrade its disasterous predictions when none of their projects come true, the man probably had a point. There hasn't been any real 'warming' that's been recordable since 1998. A novel suggesting that concerns about a climate pandemic are overblown is hardly out of line when people are making 'serious movies' where men are being chased by the icy tendrils of climate change. The alarmist and religious tenor that so many people adopt when discussing the matter as I understand it was Crichton's reason for penning a rejoinder on the subject. There is a significant body of evidence and scientific opinion in line with Crichton's opinion on the matter, its those that disagree with that particular opinion that try to claim "no one agrees with that", despite the fact an appeal to consensus is a clear logical fallacy.
As for genetic engeering, is anyone really entirely comfortable with the pace that its progressing? Perhaps the possibilities that he presented were a bit out there, but caricature in literature is common place. How we modify life at its most fundamental levels is something we should be rather leery of, and Crichton is hardly the only author to have hit upon that theme.
And if you're irritating the New York Times - generally you're doing something right.