Thousands of plumbers use a simple method of installing leak-free compression joints, ie. nothing or jointing comp. added to the olive. This works for them.
Hello White Spirit
I am sorry you did not read my posts carefully enough to grasp that I am not trying to break the habits and traditions of old and experienced plumbers.
I am simply pointing out that PTFE tape makes a good seal and reduces the risk of leaks, so is a valuable technique for DIYers.
I gather from what you say that you have not tried this technique so you are not in a position to comment on its effectiveness. I have and I am. It works.