I agree that he shouldn't need TS or a macro, but in a PUG you want to eliminate as many variables as possible and increase the chance of success to as high as possible. People with one win will join a farm party, it doesn't mean they're experienced enough to get through without help. Others might have cleared multiple times and be used to people calling it out. Therefore you try to minimise the chances of wipes with better communication. A macro can do that.