Not sure why this would be the case. I know all of my AMEX cards are currently offering a $10 off credit for a giftcard purchase of $200 or more on Amexgift.

If you're really worried about the points only, I'd suggest going to a grocery store and buying AMEX giftcards there. The $6.95 purchase fee is the same as buying it online through Amex. If you have the goldcard, you'll receive 4x points for this.