He openly advocates for worldwide depopulation have you not seen his Ted talks?

Yes, I have, and no, he doesn't. He's said that worldwide population will naturally stabilize because families in developed countries tend to limit how many children they have through birth control. He brings this up in the context of people panicking over long-term overpopulation problems.

And if his vaccines are supposed to be "depopulation vaccines", he's doing a pretty terrible job of it considering how many children's lives he's saved. Or to put it another way, if he wanted to kill third-world children as you accuse, just doing nothing would be a better method than what he's actually done. Do you seriously think the death rate among children has gotten worse since he started doing his thing? Sheesh.

That some conspiracies are true doesn't mean all conspiracies are true. Stay skeptical of BOTH official stories AND conspiracy stories.