Well, sure; my Dash 8 evac memo says I have to pull all of the Pull Fuel Off Handles, but is it really necessary doing that with a perfectly normal engine (right engine in this case) even when a couple of steps before you cut the fuel supply via a less dramatic way?
Is it really necessary, I don't know. People with more experience than me might be able to answer that question for you. But if the checklist says do it, and it ain't gonna kill me, then I'll do it. I think it would be a lot easier in court to explain why you did something that is on the checklist, rather than try and explain why you didn't do something that is on the checklist because you thought you knew better than the aircraft manufacturer.