If you read the older literature, I would say pre-2008 but I do not remember exactly when it went from Cub Scout Basic Leader Training to Cub Scout Specific Training, parents are not "do most of the work anyway." Rather they are suppose to start backing off, starting in 4th grade, and let the Cubs do more and more. It was recommended that Parents do not even sign off on advancement.
Sadly I am seeing this more and more. Only packs with WDLs with the older training are doing it they way I was trained. Forgot to add, they have better retention in Scouts.
I had a similar exp