I like round gapes without much redness, I find them aesthetically pleasing and the idea of having the anus stretched and keeping the shape by itself, it's a weird kink maybe but common enough for it to be standard porn practice.
About prolapse or rosebudding I still find it gross, because it looks unhealthy and painful enough for me not to get turned on by it and it's a bit too extreme of a practice to ever consider doing it. I understand the appeal though, of the flesh rose protruding like the harvest of an extreme fuck.
it actually is, some guys found their facebook pictures of them together not just at this shoot. And the fact the mother hasnt turned up coincidentally in any other porn makes it even more believable