So you've actually jumped from the original game you were trying to slate? Incredible.
Again, that has no relation to your post about Forza 5. Obnoxious MT have no bearing on, or indeed, evidence on your claim of "designed like a F2P" game. The fundamentals of the core game have remained the same since forever and always. Grinding is part of the game. If people - most likely casuals - want to pay for cars then more power to them. They won't be playing game in a months time, ruin the core experience for themselves and are probably shite at the game to boot.
So, I'm still not sure where the $60 dig is coming from either? The game was well supported post-launch with free tracks and reasonable DLC. Not bad at all for a launch game which is actually the best in the series as far as the racing is concerned.