I think I am overly cautious my first couple times out at any time of year and if anything I get more cavalier with frequent outings. The more objective hazards of the environment certainly seem prevalent in spring but I am not so sure about operator error being as much of a problem for me. I worry about the more inexperienced gym-taught expecting they can lead 5.11, or whatever, at the gunks because many gyms have soft grading and the added burden of placing gear will certainly further raise the level of intensity and effort.