A technique is a recipe for making the effect happen, whatever the means. If no techniques exist, if it's shown that this interpretation doesn't give a technique, I'm not interested, end of the story.

To most people, a "technique" or "recipe" would involve a fixed number of steps that are not case-specific or person-specific. At the point where the steps become variable (iterative or recursive), one would have an "algorithm" or "method" rather than a "recipe".

PCT effectively predicts that it is possible for such algorithms or methods to exist, but not techniques or recipes with a fixed number of steps for all cases.

That still strikes me as a significant prediction, since it allows one to narrow the field of techniques under consideration - if the recipe doesn't include a "repeat" or "loop until" component, it will not work for everything or everyone.