Nah. can't be, A-line. After all, this is a professional site, not one catering to the DIY
The thread does bring up one sore point: second-guessing a professional. Every job has it's unique set of circumstances, and only the pro on the scene is really in a position to make the judgement calls.
I suspect the OP was simply confused by the change in type of cord and receptacle. While this is all old news to us, to the consumer it won't register until they replace that dryer or range - and that can be in another 20 years!
There might be a 'business,' or 'customer service' lesson in this, and that is: to the customer, four prongs means four wires; if at all possible, maybe we ought to humor the guy, and at least install a pigtail.