Supernatural is so wild for the meta book series. Like one could argue some people like wincest just because the actors portraying the brothers are hot and it would be hot to see them together. And the show went okay but so actually we're going to create a completely text based series and not have these two hotties drive the wincest. Instead!!!! They're acknowledging wincesties would still exist in abundance based on the text alone. Yeah they're making fun but also how did that many "Sam slash Dean" people happen if there wasn't the text to read into? The text that the writers wrote. For the show. Aka the way they are so codependent and needy and subtextually homoerotic is already written into the story and easy to read as incest. Like THEY did that! They removed one of the driving forces of the wincest and basically said nah we write them that way.