I would be one of these people. If this is not a recent change, I apologize for helping to spread a mis-truth.
As I stated in the thread you linked; I originally signed-up using a promo-code and payed with PayPal, but sometime last year I started to see reports, both here in the forums and via email, that the promo-code option was no longer available for those paying with PayPal. It is good to confirm that this is not the case and promo-codes are valid for all payment types.
This will be very good news for those that aren't able to provide a faxed card rubbing or don't have access to a credit-card.
Edit: It should be noted that the 97 day money back guarantee does only apply to credit card purchases (and is being considered for Google checkout), as confirmed by this page on the DreamHost site.
Save [color=#CC0000]$50[/color] on DreamHost hosting using promo code [color=#CC0000]SAVEMONEY[/color] ( Click for promo code details )