1. That wasn't his bro.
2. He wasn't minding his own business. Makes him wrong from the get.
3. While not minding his own business,
he corrected the guy. Makes him even more wrong.
Maybe you missed my reply to Caine, it might help you understand a bit more.
What he did shouldn't upset anyone... on the outside.
But you know what they say - When in Rome... But in this Rome, there are two sets of rules. The ones that your jailers say you have to abide by, and the unwritten rules, which if you value your life, you follow.
You do not butt into anyone else's business, even if you are best intentioned.
Please do not misunderstand me. There are two very different sets of rules that we are speaking about.
Even the issue of the guy on the phone disturbing others I agree with you. But that was not the issue and nobody there made it an issue.
If this had not taken place in a custodial setting I would agree that his action was the only thing wrong, but it wasn't.
The other guy was not minding his own business and then made it worse by correcting the guy. That puts him in the wrong from the get.