I watch pornography occasionally, not only for the "rise" it gives me

but also because I usually learn a new technique or two.
In a recent show, I noticed that the male partner engaged in anal sex with a female, withdrew, and then penetrated her vaginally. In another scene, the male engaged in anal with the female, withdrew for the pop shot, and the female then took him orally. This was not a series of separate scenes where there might have been a bit of off-camera cleaning in between. It was one continuous scene.
I've now seen this kind of behavior in a few porno videos. It's not like it was an isolated practice.
That kind of activity is counter to everything I've read about healthy sexual practices. My understanding is it is unsanitary and potentially dangerous to the female. Or have I missed something new that allows that behavior without risk to the female?