For grins I dug out my log book. I flew with 10 different instructors over 9-10 months just on 20 hours to first solo and not much different all the way to PPL. Partly the mad house that was Sherburn in its 90s heyday especially the weekends, partly I wanted to fly on Saturday afternoons and maybe a midweek evening or two in the summer so you took who there was when the weather was good (good looking women's experience may have differed). I doubt many of them spent much time updating student notes afterwards, much less reading them beforehand as they constantly chased the schedule.
I can't see it did much harm to have a broader outlook and find my own way to some extent - some I got on with better than others obviously, but I would happily fly with any of them again. I have / had before I gave up, 500 hours on two vastly different continents and multiple types but those days of training I enjoyed as much as anything I did later. That is the way to look at it.