dont worry about it, its no use debating, you are like those people that say because you were doing 1km over the limit you are responsible for killing a drunk driver who was doing 60km over the limit and should be sent to life in jail
im sure you do full criminal checks, credit checks, veda checks, 15 references, to get someone to collect your mail as well
this thread was about personal courtesy and a degree of professionalism, and not about whether a guy who doesnt tell me he doesnt have a pressure cleaner and turns up to a job
you seem to be those people that think two wrongs make a right,
as far as im aware I wasnt raised to not be courteous to people unless they were courteous to me
I'm an ex tradie and unprofessional tradies kept me in work, never considered two wrongs make a right and never over the top in checking references etc.
You are obviously courteous to your tradies, perhaps to much so, but professionalism works both ways and you seem to lack professionalism when employing people.