Yes. Smartphone vendors and CC prefer that you use contactless rather than a physical Clipper card, then they have data on your transit use, also the CC network gets transaction fees.

FYI there was a very informative recent panel episode of Forum: "KQED Investigates Botched Clipper 2.0 Launch" (8/24/2026, audio + transcript)

> KQED’s Azul Dahlstrom-Eckman joins us to talk about his investigation into what went wrong. Clipper 2.0 – a revamp of the payment system used across the [Bay Area] region’s 22 public transportation systems. The new version was supposed to allow seamless rides between systems and coordinate discounts and other programs. But..."

https://www.kqed.org/forum/2010101915014/kqed-investigates-b...