Torture in and of itself has varying degrees of measureability and can take on a variety of forms. For the most part, in the tickling community at least, we have a general perception that our torture/pleasure is derived from tickling. And for the most part, the content produced is a reflection of these perceptions as they do cater to our fetish. The inclusion of generic sexual stimulation and arousal, i.e. standard sexual practices, are becoming more commonplace, I agree. However, if producers explicitly state in their video descriptions that such sexual practices are to be expected in a particular video, then the consumer has been forewarned.
As aforementioned, simply passing up on the particular clip would be an applicable.
However, I can see how a consumer would be annoyed at the fact that a particularly good video clip, with quality tickling content would be, "ruined" by such generic sexual practices. Taking into account that clips are generally priced relative to the length of the clip, if a particularly good video clip, with quality tickling content delves into the realm of generic sexual practices not desired by the consumer, you're looking at an increase in price depending on how long the sexual practices take.
Now I understand producers are, for the most part, extremely busy individuals, but perhaps editing out the generic sexual practices and selling purely tickling portions of said clip would be an applicable solution??