I am sorely tempted but will refrain from calling the whole lot of you a
bunch of old wives.

Kindly desist in trying to put words into my mouth.

I have NOT said that changing the source impedance changes the SWR
indication. It doesn't !

I HAVE said that if the line is NOT 50 ohms then the SWR reading, even if it
doesn't change, BECOMES GROSSLY INCORRECT !

So "in practice", even if there IS a line of some sort, as you don't know
what the line impedance or generator impedance is, then the SWR indication
and the reflection coefficient from which it is derived are MEANINGLESS,
USELESS !

As Tarmo must by now be exhausted in repeating, and I have been saying for
years, all the meter tells you is whether or not the complex load on the
transmitter deviates in some unknown diirection from a purely resistive 50
ohms.

That is what the thing is there for. Which is all anybody needs to know
anyway.

Even to mention SWR in the present context dis-orients novices and
earners - which we all were at some time or other.

So change the name of the instrument to TLI. It's not a meter anyway.

I also have reservations about so-called reflected power. But that's another
matter.
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Regards, Reg, G4FGQ