Come up to Canada, I've never experienced one NOT to work, and I've also never seen a pump in the last ~5 years that doesn't have tap to pay.

Another Canadian here. I've seen plenty of stations that don't have tap to pay. A few that don't have pay at the pump enabled and require you to go into the store. I refueled at a few this summer that couldn't automatically refund unused prepaid balance; you had to go back to the store for the partial refund.

Not hard to find them, but you're not going to stumble on one if you never leave the city or deviate from the major highways.

That's actually because most cards (or merchants, perhaps) have a limit for tap to pay that is different to chip transactions ($100-300), and if the gas station does a pre-auth for $125 or so (which is what a lot of Safeway gas stations due) it hits that and requests card insertion.

Oh, that's often true for me too for tap-to-pay, even at a typical indoor POS. Inserting the card always works though.