I apologise if my comment came off as an indictment of the whole field. It was more a reflection of my sourness at some of the things that have gotten through on tenuous evidence at best in an area where it matters. If you roll out a cosmological theory based on very speculative math you may be wrong but at worst you've wasted some research dollars. Non evidence-based research rolling out in education and therapeutic fields can end up breaking people.
Much respect for the work in education/learning science. It's probably one of the most important fields of research. Having worked in adult ed I have unwillingly had a front row seat to how much is can mess a person up if they have a bad run through the education system. It's not the whole picture by any means but it is most unhelpful when pedagogies that are something between an ideological thought bubble and a philosophical musing get rolled out without regard to whether they have a solid body of proof they actually work or are appropriate to the particular educational setting.
As far as what the survey means, without knowing their sample size, margins of error, how they asked the question and where, how it was funded, etc, who the hell knows? To quote a lecturer from an introduction to statistics subject, "what answer did you have in mind?"