Yeah, I agree. The time fragmentation in grad school makes it a bit difficult to put a lot of time and effort into any one thing, but I never found it as excruciatingly impossible to concentrate as this guy. The environment is definitely manageable.
Does he officially have ADHD? I felt increasingly horrified as I read through that post - everyone gets distracted but his level and inability to focus seems to be way past normal and into the pathological.