LW, what I meant was, that some writers here are well-known builders or will at least refer to the frames they have built, or the business they have building frames. None or them have raised the issue you did. Not that fatigue of steel is not real when bent repeatedly past its elastic zone, but I would presume others did not immediately see it as a problem. I would assume someone on this forum who says "I build frames" is a framebuilder. I would not know about anyone who doesn't.
I don't get your reference to "O brother where art thou?", but maybe it's just not my religion.