S
Spud
taking super close up pictures isnt fair to the contractor , yes the grouting could be fuller but it looks like you have a polymer hybrid resin grout like spectralock these take a lot of water to wash off and can result in shallower than normal grout joints especially with rectified edge porcelain tiles , snagging and defects are supposed to be sighted from a position standing in the centre of the room , its obvious you are not happy and are looking for support in your complaint but please post some pictures standing in the centre of the room showing the whole tiled area so we can give you a fair opinion of the work