Can Andrew Bolt and his readers genuinely be this dumb?

Unbelievably, Andrew Bolt has a post today  Fish killed by cold water the CSIRO said would be warm in which he calls a 2012 CSIRO prediction that Tasmanian waters would continue warming "a dud", because apparently a temporary wave of cold water is being blamed for a fish kill there.

Seriously, does Bolt think ocean water doesn't move around all the time, causing changes in ocean temperatures?   Doesn't he know that this is what an El Nino, for example, is all about?   Does he think a temporary incursion of cold water means a long term warming is not happening?
 
Does he think the CSIRO is making it up when it says Tasmanian waters have, on average, been warming rapidly (by global standards) over the last 50 years, as illustrated here?:

Does he think that fisherman are just pretending when they say warmer water fish have been moving into Tasmanian waters?

Andrew Bolt is embarrassing himself by displaying sheer, dumb, wilful ignorance.   That he has readers who don't give a second thought as to what he claims is perhaps the greater problem.