This "gamer" mentality problem has been mentioned by someone else here and described sometimes ago. From the moment a mainstream competitive game is open to a broad range of players, it will attracts gamers.
Gamers just want to play and win, and they will call you a whiny sissy if you complain about the way they win.
If you play one of the mainstream FPS war game (I guess it's the same for other kind of games), you will also have people playing "dirty" but not in a way that is punished by the game. Camping/spawn camping/ spawn killing, mobing the weakest players just to score without playing for the team etc...
With FPS the best strategy to get rid of these players or to get rid of this type of behavior is to improve the gameplay/modes.
Games like arma, insurgency (...) made it more difficult or almost impossible to benefit from these types of behavior simply by requiring you to play differently.
For GT sport, various solutions have been proposed on this thread, and many would improve the current state of the situation. PD is ignoring them for some reasons.
As many have said, GT sport has a huge potential. The partnership with FIA has a huge potential. But somehow PD seems to be slow at either understanding what they want to achieve, either realizing what they can achieve.
Absolutely right. This gamer mentality is nothing really new in the GT series. I remember well that many players in the past have won their races with ramming and wallriding in superior cars. But that did not bother anyone at the time because these races were not online. Computer opponents do not complain. Now in a game that is designed as an online game, the different approaches come together. I think PD has completely underestimated this problem. They thought they could handle it with their DR and SR system. But due to the flawed and easy to abuse penalty system, this does not work at all. We can see that even developers who have much experience with online games often do not get a grip on this problem. The last Battlefield games are supposed to be totally contaminated by cheaters. One solution to the problem is to make the games unattractive for pure gamers. You have listed a few examples. A racing game that makes this is I-Racing. There, the costs, harsh penalties and the general structure ensure that hardly any pure gamers play there. Most of the players there are racing fans who at least theoretically know the rules and also try to follow them. The problem is that these are games for a minority. But the GT series has a completely different job. It is the flagship of the PS consoles in racing games. GT should inspire as many players as possible and encourage them to buy a PS. This only succeeds if the game inspires the also as many as possible gamers. But this also gives rise to the conflict. A pure simulation would rather be something for a minority. But for a minority GT can not be designed, because Sony has completely different expectations. This results in objectives that contradict each other. The developers of PD have not managed to unite all these goals and create a satisfying game for everyone. That would be possible, if at all, only with great effort.