If it ain't broke then don't fix it? Just because it's been the way for 20 year doesnt make it the best way.
I'm just assuming that the original production method taught was to pull the plug out, hence the long tab on the backside "perfect for pulling on", but the easier way is to just push it in. Now let me ask you this...who do you want building your truck, someone doing it the easiest way or somone who will do it the right way???