Maybe I'm less sensitive (there's probably a graph for it!). While not a scientist, I have worked in a scientific environment and it is the nature of scientists to probe and question any claim.
I was around when scientists were engaged in work on Thrust, the speed of sound on land. There were heated discussions around the minutae of the project and I recall how it was proved (because air pressure is part of the equation) that some parts of the car would achieve Mach1 before other bits of it. I, as a layman, was left thinking that it's one thing so it must achieve mach 1 in its entirety at the same time - not so.
I don't profess to know much of the technical arguments but I have a healthy scepticism of any claim by a salesman and so I find this discussion very interesting. I'm not sure I see any casual put-downs but a mere statement of fact.