Arguing with a judge is unsportsmanlike if you are doing it improperly. Also he was more or less getting thrown out of the tournament, so you might as well go all in at that point.
It is ok to say, "I do not believe that is accurate, would it be ok to look it up?" or "Could you show me in the tournament regulations where it says that?" or "Could you give me 5 minutes to look this up so we can talk more directly about this?"
What I am not saying is that the TO made the most appropriate call. What I am saying is that 1) It doesn't seem like the player cared, 2) it doesnt seem like the player advocated for himself in any way and 3) its the internet machine right now ripping on a judge who is a great person who made a call and frankly it wasn't great but it actually doesn't involve you in any way.
It was the stream that noticed the build irregularity. If they weren't streaming nobody would have known. Since they were and this caused it, I believe those of us that were on the stream have a right to talk about it so it isn't exactly "the internet". If you don't care enough to know the current rules then you shouldn't accept the position of TO for a regional.
The player cared but since he was young he probably didn't want to get into an argument with the "locals" since he was also from out of town.
You have to go back in the thread here and also realize that this same TO told a local player whose list was not correct, that it was ok and no problem. Why was it ok for the local but not for this kid?
I understand the local store wanting to support the local players but this kind of favouritism is uncalled for at a regional that is going to attract people from farther away.
We are not judging the TO as a person, we are saying he made the wrong call and there is proof that this is so. They refuse to admit they were in the wrong.
Nothing can obviously be done at this point but they should take accountability for their actions and at least apologize to the player in question for their error.