However, I feel as a player I want my entire arsenal open to win. If I can get a read why shouldn't I be able to use it?
In my view, you shouldn't be able to obtain a read in that way
if it fails to protect other players left in the tournament, all of whom have an interest in seeing players eliminated. That is why there is less of an issue with table talk or exposing cards intentionally to obtain a read if there are only two people remaining in the entire tournament (or in cash games), because there is no one else to protect.
For discussion's sake, consider the following scenario.
Three players left in a tournament, A, B & C.
Top 2 places pay. A & B both have 100,000 chips, C has 25,000 chips left. A raises, B re-raises all-in, C folds. A is contemplating calling (he has AK suited).
a) Do you think B should be able to show A that he has KK? B would like to show KK because he wants to discourage player A from calling with an Ace, and is afraid of being eliminated on the bubble.
b) Do you think that A should be able to show B that he has AKs? A knows that B is the type of player that will look very excited upon seeing the hand if B actually has Aces or Kings.
c) Do you think that A should be able to ask B if he has a pair, and that B should then be allowed to reveal that he does have a pair? A plans to fold if B reveals that he has a pair since he doesn't want to risk (what is at best) a coin flip.
In my view, none of the above actions should be permitted if C is still left in the tournament. Sure, in general, players should be able to rely on their experience to obtain reads that will help them make better decisions. However, if a line has to be drawn, I believe it has to be drawn so that players are not permitted to reveal the contents of their hand (either verbal, or by exposing their hand) since it does affect other players in the tournament. In the above situations, A would essentialy be basing his decision to call or fold given knowledge of the contents of both hands -- breaking the one player to a hand rule.
In particular, if C were to argue that it is unfair for A and B to "share" information in this way that would give A a chance to fold, when most other players might have insta-called with AKs in the same situation, which would have eliminated one of the players allowing C to cash, would you be inclined to agree with C that it is unfair?