I have read several threads on PPRUNE about situations where aircraft appear to have deliberately ignored clearances and you ATC folk seem quite laid back about it. I have to admit that I am a relatively inexperienced CPL so perhaps I'm missing something, shouldnt' all pilots comply with a clearance unless it is likely to effect the safety of the flight.
Surley what the MY pilot did was potentialy dangerous or could have had a knock on effect to other flights causing inconvenience. After all it's the guys on the ground that truely have the big picture.
Don't get me wrong I'm not trying to pick a fight with anyone in atc, i'm just confused and alarmed that these pilots continualy seem to get away with it or isn't it the big deal that I think it is?