The point was every driver says silly things over the radio. I don't think you realise how much adrenaline you have in your body driving. Look at Magnussen, accusing Hamilton of bashing him off on purpose, then said he didn't really mean it.
Tbf The Rosberg/Hamilton situation was very suspicious. Mercedes were bulletproof at that time and somehow he kept getting mechanical failures, enough to give Rosberg the lead
Lets be honest here, Perez will never win a race if Verstappen is in with a chance of winning also. They will purposely change his strategy or give him an extra pitstop just to get him out of the way.
He is the clear number 2 driver, but they obviously promised him a chance at winning which he isn't fairly being allowed. He might have had a chance to win, but they made sure he wouldn't be there.