That's bollocks for a start. Inept parking is one of my irrational dislikes. When you see a badly parked car that's across a marked bay it'll be a forwards parked vehicle 9 times out of 10. Reversing gives you far better perspective with the door mirrors.
I'd be interested to see which method any professional drivers on here use/prefer.
More importantly reversing allows you to control the whole car whereas when going forward the rear wheels follow (at an angle).
First sensible post ever from the Rev?