Still, some are closer to the source of these ideas than others, think about awards attributed to individuals for example.
This is where the researchers would disagree with you. I don’t know if you’ve ever been involved in research (or startups). There’s a common saying that ideas are a dime a dozen. It’s much more so the work you do that’s important, not the idea itself.
singers, actors, politicians, or youtubers
Notice how being in the spotlight is an important aspect of all the professions you’ve listed. That naturally selects for people who are comfortable with or enjoy being on camera and are good at that kind of live performance. Similarly, science selects for people who are good at doing science. Sometimes, there’s an overlap, but it’s not that common.
If you’re interested in interviews with prominent scientists, Lex Fridman does quite a few of those. But if you want more people to do this, you’ll have to contend with the fact that most scientists simply have no interest in being on camera and probably never developed the skills needed for it.
Immediately afterwards? I’ve been told to wait at least half an hour after eating, or else brushing will have a negative effect on your teeth.