That's their norm. Garrincha paved the way. Pele is not held in as high esteem in Brazil. Pele is this "professional gentleman" guy who's not really celebrated in Brazilian football as a way of life. Several have been like him, like Rivaldo, Cafu, Kaka, Julio César, Diego, Gilberto Silva etc to name a few recent ones.
But the Romario, Djalminha, Ronaldo, Ronaldinho, Maicon, Roberto Carlos, etc of this world are much more.
The problem with Brazil is not that these players don't exist anymore. Sure, maybe not at this level. It is that the very Brazilian clubs are becoming less Brazilian and more European, trying to emulate Germany and Spain, which they cannot. They are different. Which is why they are struggling in big tournaments like the World Cup and their best players are mostly in the Premier League and they aren't really that great either, relying mostly on their athletic ability. Think Fernandinho, Fabinho, Fred etc. You see guys like Coutinho and Richarlison being considered great now but they'd not make the lineup in any Brazilian team before 2010.
They need to let these talented players take over and stop nurturing them from the age of 11 to this "modern football" regime that just makes them useless. I mean, if Neymar is your only bad boy and his main issue is that he likes to dance and flop, you're screwed as Brazil.
Same way Argentina has lost its way too. They stopped breeding #10s because they took them out of the game.
I do agree that they'd have better careers if they were more professional but at the same time, some of them would probably not even become professional players given the demands of Brazilian youth clubs these days. I wouldn't like to see a tamed Maicon that would hesitate to go forward because he'd expose his spot tactically or a tamed Ronaldinho that would opt for a simple pass or one-two instead of taking on his man with a shortly cut dribble.