Did anyone else notice a change in how the Amex credit is being applied?

I took an Uber this week and was charged the full fare, despite having $15 of Amex credit available. The credit was instead moved to something called Uber Cash, which seems to be a new-ish feature. On my next ride I was able to use that “cash” as a payment method.

I was was initially miffed about it but then realized it is a game changer. I mostly use Uber for rides to and from airports. My travel is concentrated in certain months, so I go months without taking an Uber, effectively wasting the credit.

With Uber Cash, it seems I should be able to reload the balance once per month and then use the accumulated balance on months I actually take Uber rides.