a public figure like Bill Gates who is trying to provide solutions (or whatever he is doing, I see some other posts pointing to other less noble agendas he might have) can't exactly come out and say "well, this will probably all not work, most of the observations point to collapse of most farming and mass die-offs due to heat / starvation within ten years", that would work against his goal of getting people motivated and interested in working / voting towards a solution.