Does posture matter when understanding a patients narrative & How to bridge the gap between static postural observations & their possible association with the symptoms / issues of the patient?

Quick context: in simple terms I personally feel like posture is just a representation of someone's state of being, It's a picture which we must interpret - whether holistically or as a sum of many smaller parts. i feel like its useful to know but im struggling to know to what end. (partly because there is so much bullshit around posture but on the other hand a lot of patients find success in posture oriented rationale i.e with the use of manual therapy and "corrective" exercise.

- Why does it seem like everyone (myself included) use static posture in their assessment strategy if its not considered to be "useful" or "important" by a lot of "evidence based" PT's especially people like adam meakins or Physiotutors.

- For people who do use static observations to guide an assessment process: "How do you know" why things have "maladapted" away from this "neutral" or "ideal" is the presence of a deviation on its own enough or is its magnitude more important, and how do you benchmark this?

- Should it be an all or nothing approach where either you use it with some patients, or, with all of them?