Why exactly is it bad etiquette to ask to see a losing showdown hand?

[Wongboy]

[ QUOTE ]
Final 3 of an MTT

BB has 220k
SB has 30k
Button has 50k
Blinds are 8k/16k/1k

SB and BB know each other and are friendly. Button did not agree to chop earlier when both suggested it. There has been some flared tempers between Button and BB. There have been some questionable (in Button's eyes) plays between the two since 3-handed including BB checking behind on all streets in unraised pot when he flopped TPGK. There have also been two seperate occassions where BB folded to SB's push getting odds good enough for a smart player to know to call, and good enough odds for even a poor player to likely understand he needs to call.

Button folds
SB moves all-in for 30k total
BB folds

Button asks to see BB's mucked hand.

Is there a set rule? Does this change depending on venue? Is it the Floor's discretion?

[/ QUOTE ]

Depending on how button is playing, and the relative heads-up skill level of SB and Button, it may be correct for BB to fold any hand in this situation. Therefore, IWTSTH can not possibly establish collusion, or even poor poker play. All it does is slow down the game. In addition, if the floor asks BB why he folded KK (for example), then he forces BB to reveal information about his play style at that point in the tournament, which is clearly not fair.

I do think that the floor should have provided a better explanation, however.