FORMER government official, considering when he served he's probably quite old. For all we know they could be on their death bed, saying shit that they're not going to be alive to take shit for later when their claims are found to be unsubstantiated at best, like that Lockheed engineer that claimed they had contact with an ayy at Area 51 (or something like that, I can't remember the whole story)
Also, what is this technology that could reverse climate change? If it would hurt the oil industry I'd imagine it was a way to generate energy. If it's something that could repair the environment or control weather then how would that hurt the oil industry? We'd be able engage in any kind of industry however we wanted and suffer no consequences. I really wish they specified in the article.