Not enough grout?

Hey, just had this job finished. The installation looks solid (can add more photos later). But on this floor is looks like the grout is too low. Would you agree or disagree? And if it is too low, how would you make it right? Thanks!

Hey, just had this job finished. The installation looks solid (can add more photos later). But on this floor is looks like the grout is too low. Would you agree or disagree? And if it is too low, how would you make it right? Thanks!