Not always though. The career in project cars, grid autosport, F1 games etc doesn't feel like a grind. The seasons have a points structure and a purpose to them, you actually win the championships and in some of these games, use lower championships to further your career in higher levels of motorsport. Forza's career feels like "race against these cars for 5 races in a row, then pick another type of car and do it again for 5 races." There's no connection, no purpose to it. No emotional involvement just one race after another, a grind. Pokemon is much less of a grind game them Forza there's an overarching plot and small amounts of character development.
Also on you're condescending tone about struggling with credits, I never said that I was having trouble but that it was the only reason I played career mode, to get credits when I need them.... well...