First, even his data shows an increase in temperature that is very much on par with the median climate models.
Second, arguing that this is an unexplained natural warming trend misses the obvious issue that it is just as likely that we're in an unexplained natural cooling trend. That means that it is essentially equally likely that the more extreme global warming predictions are right, but we're encountering a natural cooling cycle.
Third, this is by far the best explanation for the data we've seen.
And finally, limiting yourself to only reading stuff which supports your point of view means that you'll always agree with yourself.