You’re not “doubting their sincerity,” you’re claiming that they’re members of a Leninist conspiracy. Quite a difference there.
“Supportive of Leninist aims” is the phrase I used, because the global warming myth is a Leninist creation.
I said nothing about a conspiracy. Conspiracy implies organization, coordination, window-less rooms, Jewish bankers and cigarette smoking men. I merely said they’re fellow travelers working toward the same end.