Interesting thread. I come at this from the perspective of developing people once they have entered the workplace. There have always been the perfectionists, the avoiders of 'out-of-comfort-zone' situations and those chronically lacking initiative. These issues are becoming more prevalent, albeit at the margins, and can be addressed - though that takes time and effort that could be deployed elsewhere.
I do worry that the trend, in some schools and areas, towards 'fewer, but perfect grades', intensive tutoring through the majority of school years and even into university years exacerbates that trend - as does the difficulty of securing paid work during sixth form and university years to give students experience of environments that are not 'student-centric'.
Having said all the above, it is important not to catastrophise. The vast majority of people I support have managed to make their way through our education system to emerge as balanced, happy individuals on their own terms and long may that continue.