Jensen, in addition to being a prolific author, is one of today's leading environmental and social philosophers. The only reason you know or care about who Gates is, is because he became very wealthy from predatory business practices. Kind of a stupid reason to pay attention to someone.
I care about what Gates says because he's founded one of the world's largest charity organizations and has done a great deal to reduce human suffering as well as specifically a lot of work in regard to climate change. Being rich alone doesn't matter to me, I don't give a damn what e.g. Jeff Bezos has to say about the matter.
Being a prolific author doesn't mean much to me and neither does being an environmental philosopher in this context. Someone like Peter Singer definitely is an authority on environmental ethics, but on the effect of climate change/the ecological state of the world I don't see why anyone would consider him an authority.
> I care about what Gates says because he's founded one of the world's largest charity organizations
So your criteria for who is and is not worth listening to is "rich man who gives a lot of money to charity." Wealth is not some kind of superior substitute for expertise or insightful ideas. Unfortunately this seems to be a popular delusion today; that does not make it any less stupid.
