Sorry if I came off too snarky...
I understand what you are saying DesrtRat and don't doubt you.
I put a watermark on my images on the gallery (and have been called out for it as some say it is distracting) just for the same reason you outline..... I also have photos that "I do not own".
I stand behind my opinion of more gallery posts... but no I don't want or actually advocate anyone kicked out.... I came right out and said "rant"...and I accept your (others) critique of me without malice.
Cheers.