Easy money means no requirement of mind-numbing grinding, racing the same races against the same AI cars over and over until your brain melts out of your ears as GT is so fond of. The easy access to money is one of the best things about this game. Of course, if you didn't have all the other things you can do in this game (weekly chores playlist, livery editor, eventlab, online racing and games in a wide variety of ways, almost a thousand cars to play with and a 2k car garage so you can have as many of your favorites as you want) most people would quit playing after a few weeks.
The money and wheelspins are just a gateway to the rest of the content, not so much a goal in and of themselves as in so many other games. People who can't move out of that old school mindset seem to struggle to enjoy this game.