The type of players that play the game is so varied though. You have math wonks like MinMax playing with others that can't be bothered to think and want to be told what to do. Maybe they just like the game for the pretty pictures. Also, others may have stopped at chap 16 NOT because of the tourney impact but because the late chapters move at a glacial pace, which have taken the "fun" out of it for them. They'd rather continue to hang out with the fellowship but skip the part about watching paint dry. Yes, I am sure there are many players that once heard someone say chaptering up is bad for tourneying and just stop without understanding why, but there are others who stop chaptering for reasons other than tourney. Just like there are tons of people that are afraid to upgrade wonders and that one is also fraught with fear mongering.