You always think these things can be swept away by who would have won anyway, or who has the better career, so what does it matter? You're ignoring what happened at that moment. What Medvedev said was racist. He was implying that the umpire couldn't be impartial because she was Black and so was Young. That is vastly different from merely complaining about a call. Personally, I'm glad if tennis won't tolerate racism, or at least makes efforts not to. You "see it differently," but I'd ask you to examine your own heart. To me, Medvedev needed to understand why that was intolerable. It's a matter of the ethics of the game, and how the crowd would perceive it, too. Tennis chose not to tolerate that, which I agree with. Has tennis been consistent in its punishment of these kinds of unsportsmanlike things? No, it has not. Hewitt made a nearly similar remark, playing v. Blake at the USO, and not only didn't get ejected, he didn't even get fined. But I have no sympathy for Medvedev in this instance. He crossed an ugly line and got done for it.
You'll have a hard time finding out what Fabio really said. I posted what I could find from Italian media. While it was rude, and he was already down one mark on unsportsmanlike, I'm not clear that this was one where he should have been ejected. He's going to contest it, so I guess we'll see down the road.