To achieve this clean, spacious look, contemporary cabinets will not have any crown molding or raised panels. Instead, the cabinets will have flat surfaces with sleek, simple hardware and no other decorative accents. Credit to www.hgtv.com
If he hacked on it, then have him replace it with proper crown. And fix the install. The cabinets shouldn’t have been installed tight to the ceiling to begin with. He should have left room for crown. Or, whomever designed the space should have designed the install with room for crown.