In hockey, a fast and physical sport requiring athletes to be at their peak physical and mental condition, I even think 6 year deals are too encumbering and fraught with risk. Let's say Step signs a 7 year deal for 6.3 and blows his knee out next year.
So you ask what is the realistic difference between 6 and 7? One whole season! Hypothetically, Steps contract could hurt the team significantly in 2020. Is that a good enough reason to also handicap the team even further in the future and throw away 2021? Or 2022? Hey I might be dead, Gorton could be long gone, 95% of the team could be long gone, but hey our kids get to experience Steps cap hit.