counterpoint
he made this happen:
Sometimes the success of someone in stage or screen has as much to do with their nature off stage and screen than anything else.
For example, your cello teacher will tell you never, ever to try to imitate Yo Yo Ma, because his technique is "terrible." While he's the most famous cellist alive, he's by no means the best. But everyone who's ever worked with him or met him will praise his kind and unegotistical nature, an extreme rarity for anyone at that level.
Look at everyone in that video above. They are having a BLAST.
And what makes a person a good talk show host/interviewer is, more than anything, how they make the guests feel and get them talking about themselves.
Rick Beato needed a certain number of subscribers to get the interviews he wanted, but then in those interviews it's clear it's not just because of his subscriber base. Brian May tells him how he watches Beato's channel. Guys like Maynard James Keenan, famous for hating and avoiding interviews, not only do the interviews, they have enough of a good time that they come back for seconds. The guests LIGHT UP as he gets them talking about their favorite things.
I don't follow Fallon much, but shit, man, I've seen the type, and I'll not begrudge him any of the success he's had.