You completely missed my main point. You are blaming the victim here when the standard was just arbitrarily changed.
No I'm not, the umpire is the victim not the player.
It's been clear for some time that if you gesture or complain about a decision then you run the risk of giving away 50. So don't do it.
The only arguments against the Cognilio decision are that it wasn't that bad or other people do it and aren't penalised. Neither of those arguments hold any water. The line on the first one is where the umpire says it is and the second one doesn't mitigate your own responsibility in the slightest.
Shut your mouth and don't gesture. Simple. Do either of those things and you are playing with fire and at some point might get burnt.