The firm he hired specialises in this work, and is not the smallest or newest kid on the block.
Just because they specialize or have been around a long time doesn't mean they know what they are doing- only that they are good at BSing their customers.
There is absolutely no excuse for stapling CAT 5 in new construction. No reputable company will install cable that way. True, it probably will work but that is no excuse to at least try to get it right.
-Hal
