Well, I was maybe a little unfair because the competitors have at least partially “caught up”, but at one point, of Domino’s, Pizza Hut, Little Caesars, Godfather’s, plus a couple online pizza store SaaS used by smaller local chains, Domino’s was the only one that would interrupt me to make me click “no thanks” to some offer or other before proceeding, including during checkout. Multiple times per order, in their case—they’d do it once or twice in the checkout flow, plus sometimes after adding an item to the cart. I dropped them from the “oops we failed at getting dinner ready, what can be delivered and is cheap-ish?” rotation for a while over it.

They’re still the worst about it AFAIK but more of their competitors now do that at least once an order now, too, so the difference isn’t as large.