I’ve been a psychology professor since 2012. In the past six years, I’ve witnessed students of all ages procrastinate on papers, skip presentation days, miss assignments, and let due dates fly by. I’ve seen promising prospective grad students fail to get applications in on time; I’ve watched PhD candidates take months or years revising a single dissertation draft; I once had a student who enrolled in the same class of mine two semesters in a row, and never turned in anything either time.
I don’t think laziness was ever at fault.
In fact, I don’t believe that laziness exists.