What is the issue here? Attractiveness is subjective. They have been married a while now and have two kids. If you posted this picture to women none would be saying that Bill Burr is a looker himself, they are equals here.
Also, just from my own observations, with these parings where you have this exact bi-racial set-up with age involved, typically, the dude has a high libido and you're not going to get matching high libido from a stale white woman who is age-appropriate. You'll get a matching appetite for the bedroom with this paring. For many men, this is *very* important, especially as they age. If you're seeking companionship and still want to have the frequency of sex you did in your 20s and 30s then having a girl who has the same appetite in the bedroom is critical.
Also, the above is a bad photo of both of them. Here below is a photo from a few years ago. She isn't all that bad. She isn't my taste. Bill, I assume he is happy.
Alarm bells would go off if Bill would be considered at a much higher level of attractiveness vs his wife but they are both very generic looking. Neither of them was going to model competitions in their primes.