The above is perfectly correct.

Also keep in mind, a lot of people also have AmEx Platinum and probably Gold card too. So AmEx card holders already get Uber and GrubHub/Seamless benefits. Some of us do not use them either. Now you add two more vendors. You need more micro-management skills to keep track of them all.

I can see some young people living in metro area can benefit from ride-share and food delivery. But how many of them have the energy to keep track of saving $2 or $5, here and there? Most of them do not.

Also CSR should be the premium card, targeting the more affluent customers. Those people probably use those "benefits" less often than the young people.