Nah, that just makes that section of countertop "forbidden space". Can place anything on it (toaster, microwave, coffeemaker, etc.), can't use it for prep space unless you already know you won't need anything from the freezer. Can't let any dirty dishes pile up there.

But why not have a chest freezer underneath the countertop, but as a pull-out drawer? Same benefits of a top opening, but no need to dedicate a section of countertop for the lid to open.

Until you need something from the fridge while you're cutting something on the countertop... or you spill something on the countertop and it leaks down into the fridge.