That's the whole gambit here: use the system and media to paint a pretty picture of <person so terrible they need PR>, trust that some non-trivial amount of the population will buy it, deny any wrong-doing publicly or on record. Hope they don't come for your head. Rinse and repeat.
But "Presumption of innocence" is a real thing.
And it doesn't change the fact, that Bill Gates still for sure is knowledgable and probably relevant enough to read what he thinks