You and HJ think too much of yourselves. Master plumber my ass.
I have noticed over the past 50 years the most incompetent non formally educated person will call themselves a "plumber"
Decent localities actually fine and in extreme cases jail these frauds as saying they are a plumber without the benefit of a master license is illegal
Licensing laws protect the consumer from fraudulent stumblebums who have no idea that plumbing is 60% theory and 40% hands on experience
One without the other is like going to a doctor who never had a license or a non licensed driver who can't read
Last week end I sent my employees to classes on Saturday and Sunday (I paid them over time to attend) to be qualified to work on natural gas piping
The manager of my company who is in America 5 years and is working for me for 3 years 2 months ago took and passed a gas certification course that cost over $2,500
His salary is $5,000 a week only because he does have amazing mechanical ability and is willing to learn he is also taking courses and is now handling all my new construction jobs as well as hiring people with a journeyman's card to work in jobbing
Plumbing is complicated and an unending education
The picture is what one of my employees installed This separates the handymen from a well trained journeyman