Particularly, I'm curious about your objections in a cash game setting once the hand is heads up. Note that I'm not talking about multi-way pots here. I think it goes without saying that you should never intentionally expose your hand in a multi-way pot. I'm primarily a cash game player, and this topic comes up quite a bit when I play since I expose my cards with a fair amount of regularity.
The gist I'm getting is they aren't against it in cash games, but they are in tournaments because exposing your cards could impact other players still in the tournament. Here's why I disagree in the situation from my OP
1. There are two opponents involved in this hand. Player #2 is already all-in. Player #1 is the one who asks first, and then exposes his hand. In poker I believe it's considered against the rules to influence the actions of another player. However, as Player #2 is already all-in, he has no further "actions" he can take, so Player #1 exposing his hand doesn't influence the "actions" available to Player #2 because Player #2 has no "actions" remaining to him
2. They argue that Player #1 exposing his cards could get a reaction from either Player #2 or the other players at the table, and that getting a reaction from your opponent is somehow unethical, unfair, etc. to the other players in the game. Again, this is wrong, because it's already been shown that published tournament rules in a situation like this permit you to mention the "strength or content" of your hand.
Are they trying to argue that a player saying "I have Kings" will not produce a possible reaction from either their opponent in the hand or others at the table? If their argument is that one shouldn't be allowed to obtain a reaction from their opponent (and that seems to be the argument I'm seeing pushed most heavily against me) then they are hypocrites because there are plenty of other actions permitted within the ruleset of most poker tournaments that "could" result in a reaction from their opponent.
These include reaching for your chips, taking out the amount of chips necessary to call and counting them out, stacking them, looking at your opponent intently, discussing what you believe your opponent has, discussing the strength of your own hand, saying you think you have to call, asking your opponent if you fold will they show, etc. All of those things are done everyday in poker tournaments, and all of these things could result in a reaction from their opponent (and I could argue that asking "if I fold will you show" is more likely to result in a verbal response from your opponent, giving you a much better tell, than actually flipping up your hand which isn't likely to get a verbal response from your opponent at all). Obtaining a reaction from your opponent is not illegal under poker rules, influencing their actions is. It seems everyone is trying to outlaw getting a reaction from opponents, and that's just idiotic to me.
Anyway, don't waste any further time with Mojo, no sense in feeding the troll.