To be fair to Sinnmeister, the 960 is not an ‘older’ card - just a lower spec’d current generation card.
AFAIK cards prior to Nvidia’s 6XX series do not work with the Oculus runtime since extended mode was dropped - so if he’s using a card from before then, he has a valid point. I imagine there’s an equivalent cutoff for AMD cards, but I’m not sure what that is.