No, that isn't what I'm saying. Within the spaces he exists, aka the right/right leaning influencer space, the MMA space, the broad podcasting space which leans heavily right wing overall, the anti-vaxxer/conspiracy theory kook space, etc etc Kamala Harris is not a well known figure (beyond clips/sound bites from their favorite content creator). She's more well known now, because she's the candidate, but before that I guarantee you at least 60% of those people couldn't name Biden's VP off the top of their head.
Don't take my word for it, you can just go look at worldwide Google trends over the past 5 years or whatever the fuck.
Regardless, it's not really worth arguing about. The overall point is it's beneficial for her to get her face and voice in front of Joe's very large [and very ignorant about her and her politics] audience, and not in the form of clips or sound bites broken down by their favorite talking heads. Her going on the show doesn't lend Rogan any clout, he's already got that locked down. The point is to generate clout for her in the minds of his audience.
Yeah, you're not wrong, that's the reason I believe it's a slam dunk for her to go on Rogan. Those bros you speak of, there are a lot of them. And there are also a lot of people that watch both of those podcasts that aren't meatheads, but people who aren't necessarily as online and/or plugged into the political sphere as most of us are, and only base their opinions on what they see in mainstream American media. Like you said, most of those people are voting Trump, or at least leaning Trump.
That whole sphere Rogan and Schulz inhabit contains millions of Americans, and you're not trying to reach the willfully ignorant bros that wanna turn themselves into a ninja turtle like Rogan has, you're trying to reach the politically ignorant [but not complete asshole] "normie" that has a Trump sign in his yard because most of his friends/family do, and might tune into Rogan because he has a UFC fighter on that they like or whatever the fuck, and might just tune in and watch Kamala Harris have a conversation with a person they [think they] relate to before their eyes and consider voting for her.