Is the David Jones AMEX card affected in the Amex April 2019 devaluation?

The David Jones American Express card was not included in the article.
Could you please advise if and how this product will be affected in the analysis provided?
Many thanks,

There are no changes being made to the David Jones card with this set of changes.

So in theory, those who may have been considering a card from the Amex range, may be better off sticking with their DJ’s card?