I do agree with you to some extent, however and first, i do believe companies are then allowed inflate their accuracy numbers. Secondly an "average" shooter would never be able to get the potential and consistent numbers which then and only a seasoned shooter/reloader would always question (because of seeing the known discrepancies) until proven in otherwise enthusiast hands.
My thing is that when i sold guns for a living, the average person would read, hear, see, or watch a rifle and/or pistol shoot these amazing one hole cloverleaf groups, come to my store and want that firearm because of it's great inherent accuracy. Well that was great, then i'd get this pi$$ed off customer that would show me a 2 1/2" group @ 100 yards and be mad at me!
And after that has happened a few 'dozen' times, morally i'd tell customers that posted accuracy is what you may expect, but don't be discouraged with 2 1/2" and under @ 100 yards, and that my friend saved me from a big headache!
Lastly.....An old Smith mentor of mine would always tease me and call me "New School" (because of my machining background), and talk about Ransom Rests being the modern way for cowboys to have two hands, because back in "the olden days", that's how you knew a bad gun maker, by one handed people walkin around!
But after building my first 44 Mag on a Bisley frame i returned the next day with in fact, a Ransom Rest. He took one look at me and said "Son, what the he11 you gunna do with that thing?" and my reply was "i'm testing my gun for safety, then i'm taking it off and testing it for accuracy". A mix between the look of suprise, and wth was on his face, but then he said "i guess i taught you well New School".
So with that little background on my learning, i guess that's why i still stick to the original "Ransom rest........WHY????????" topic, but to add: Besides the reasons for safty testing.