I strongly beg to differ. And you have offered no evidence other than conjecture. The extents the Beis Din went to avoid implementing a death sentence, were technical ones. They did so for a 13 year old and for a 43 year old. Being 13 is no more an excuse for avoiding the death penalty, al pi din, than being 43 years old.
I beg to differ. If the only reasons to avoid a conviction were technical ones, how could any Tanna definitively state that they would NEVER apply the death penalty?
The Wolf