I don’t want to give you a hard time, I just think it is courteous to provide readers the main points, so they can judge if it is worth their time.
It is being respectful of the time of others - also kind of like truth in advertising.
It is also helpful for comprehension and retention to have a framework laid out before the body of a discussion to help put things in context, as they arise. Best practice.
This interview is so jammed pack with info, my summary would be long than anyone would begin to read. So many topics!!!