You may find a freelance FI like Bose who'll be happy to sit there and do nothing and get paid for it. You'll both be happy. He got his £30, you got a sign off for another 2 years, but doesn't that make an utter mockery of the system. Who has benefitted from that flight? No-one
breathtaking arrogance.
And this is really going to sting you..... I generally provide my services for free as I enjoy what I do. I also firmly believe the role of the Instructor is to guide and mentor not attempt to flatter our own egos about how clever and great aviators we are.
I don't disagree with your core sentiment that we are there to guide and improve. But there are many ways to skin a cat but setting yourself up as an authority figure with the power of life and death is not one of them.
There are many people on these forums who have flown the hour with me and had their licence revalidated. I challenge you to find one of them who will tell you I just sit there and do nothing. The difference between you and me I suspect is that I ASK what they want to do, follow the spirit of the regulation and view the flight as an opportunity to improve and not as a test that they can fail. The very nature if the flight is for them to have the opportunity to cock up and have gentle guidance to correct and improve things.
But if the FI has to take control to stop you endangering the aeroplane or yourself, and if the instructor has to correct your poor RT or stop you infringing controlled airspace?
I am Pilot in Command, a responsibility that I take seriously, so there are not going to be any airspace busts, (we all know what happens to Instructors when this happens!). If the RT is poor then it is a learning opportunity and again if the pilot endangers the aircraft then it is a teaching opportunity not a pass or fail test. A good Instructor should leave the student feeling that they have learnt not been 'tested'.