I only brought it up to customers who had tap symbols on their cards. The surprising part wasn't that they didn't realize that they could tap, it's that they didn't even know that the technology existed.
You must have some old cards, then. I don’t think any I’ve been issued in the past five years have a chip but don’t have tap-to-pay. (Gift cards are usually swipe-only, for cost reasons.)
I have several payment cards. Only one is tap-to-pay.