No, they don't. It was done away with for many important reasons, including but not limited to:
-people intentionally giving the wrong address so that it takes over 30min, costing everyone from the driver to management both time and money
-drivers speeding to meet their time quota, and causing wrecks at increased rates
-driver shortages, amplifying the last point
I worked for dominos as recently as last year. The number of people that still try to scam you over the 30min/free rule is asinine, and at least twice a week I had to explain to would-be customers that 30min/free hasn't existed in at least 30yr for a lot of really good reasons. I've even had customers ask if they could tip "extra" to get it sooner. Unless you're tipping enough that everyone involved (cook, dispatch, driver) gets as much as the order's base cost (multiplying order price by 4 at minimum), we're never going to do that.