There is also the fallacious argument that a person is "free to express their opinion". This is just a restatement of the mythical "free speech" concept where speech carries no consequences.
The only way something can have no consequences is if it has no effect. The only way something can have no effect is if it doesn't exist. It's completely paradoxical, therefore, to claim that something can exist and simultaneously have no effect.
People are not "free" to express an opinion. Instead, if they choose to express anything, they choose to pay the price. The price is the effect on others and the effect on the person. There is no free lunch in this world.
Federer, Nadal and Djokovic pander to plutocrats and charge huge appearance fees. The "trickle down effect" means that tournaments like the Heineken Open now have to pay appearance money for racketeers that many of us have never heard of. It's close to extortion.
At the end of Federer's first round match at the Australian Open a fawning interviewer asked about his kids and if he had bought coach Stefan Edberg a birthday present - no, by the way, the privilege of knocking up with 'King Roger' was enough of a present apparently.