Brand new Subaru brakes grinding

What is your question?

Test drove a 2024 Subaru Outback Touring XT. The brakes were grinding on hard stops. Dealer said they thought it was the tire shine that got on brakes. Are going to repair or replace the rotors and pads. Should I still buy it if they fix it? Is that possibly true?

What makes this problem better or worse?

Hard braking