Here is the story. I dislike the headline because I don't care who makes whom richer as long as they are honest about it. That stipulated, I believe the story is essentially correct because it tracks with my experience pertaining to 350.org .
When I had my conversations with 350.org, I found them not to be respectful of science and I found them to be extremists. I would never give them money. It is indicative of Buffet's character that he does and does so without up-front disclosure.
While I am a huge fan of railroads and, especially, BNSF, it is also a fact that pipelines can be a better alternative for moving fossil fuels. So, Warren Buffet -- a 'good' progressive was willing to sacrifice the environment in order to make more money. And, yes, he takes private jets.
I'd call him a hypocrite but that seems par for the course for the global warming movement.