Back when Scrum was new I already wondered how it could make sense to make developers be constantly sprinting. I mean it's right there in the word choice. You can't sprint all the time! A sprint is short and fast and then you rest. Making everything in work life be only sprints is madness.
Heh, I say the same thing nearly every time a meta-discussion on Scrum/sprints is had. As a former sprint-runner, it irritates me to no end that nobody sees a problem with sprinting all the time...