1998 was an extremely warm year due to El Nino.  Hence there appears to be a hiatus on surface temperatures since 1998 to 2016.   

On the other hand, the extraordinary growth of temperatures up till 1998 was often used to make alarming claims on 4C or similarly exaggerated claims.

The most significant greenhouse gas by far is H2O, not CO2, but some people conveniently ignore that. 

A lot of people who use settled science as a weapon to bludgeon skeptics into submission often don't even understand basic Physics, this is the world we live in today, just accept that its all corrupted by politics and vote accordingly to keep the world a sane place.