no. just NO.
look at maps of polio proliferation before/after Jonas Salk, the frikkin guy who DISCOVERED/CREATED the polio vaccine, and then look at maps related to Gates work, which, while admirable, bears no comparison from the night-vs-day world of pre-polio-vaccine vs post-vaccine.
Wards of people in iron-lung machines staring at mirrors on the ceiling.
It was before your time, but this is no excuse for spouting total nonsense.
You might be right. It is possible that Gates is merely one of the most positively impactful human beings, rather than the absolute most positively impactful.