The only people who are questioning the science are the ones who don't have the necessary knowledge to evaluate the claims scientifically and who have an economic stake in continuing fossil fuel usage.
That's dismissive: you're claiming that the people who disagree with you are only disagreeing because they're idiots who should be ignored, and/or are being paid to disagree.
Dismissive or not, he's right that that's mostly the case. You don't see the climate science community arguing much about this issue. It's right to dismiss them.
That's dismissive: you're claiming that the people who disagree with you are only disagreeing because they're idiots who should be ignored, and/or are being paid to disagree.