Why would anyone care who the stereotypical white dude is?
Because he doesn’t deserve to be the guy in the meme. Think about all the other actually cool people who have been immortalized in silly memes, a lot of times they get interviewed and it is really funny. Everybody enjoys on some level that the person in the funny meme they are looking at is actually a real human being who has the goofy honor of being famous for the really specific, niche context of that meme.
Why give that joy to a complete asshole and loser? Why give it to a media personality who spreads hate? Who cares if nobody recognizes who Crowder is, Crowder doesn’t even deserve to be interfaced with as an anonymous white dude in a meme, it takes away the necessary shame Crowder should experience at every interface with the broader public.