There is a lot to enjoy about this game. It allows for some fantasy, like a Williams team that can compete for race wins and maybe even a championship, a championship where it isn't just a fight between the same teams and drivers ad nauseum, Drivers changing teams and/or losing their jobs altogether(however random it may be) instead of ten seasons where the only driver changes involve your own avatar just randomly taking a drivers job and them being out of the championship entirely. The game this year even tried to inject some semblance of life beyond practice, race, develop and repeat by having the mini-story with F2 and Weber and Butler. Despite the fact that CM were clearly half pregnant with and could have been spmething great if they actually ran with it as opposed to it being a half-hour detour before the usual sterile pattern from previous entries in the franchise. Implementing this story-based gameplay isn't a bad idea either. Pretty much every sports game worth a damn these days has tried or should be trying to do story aided career modes they are something that the players can immerse themselves in. There are always modes in Sports games for the simulation fans like the regular championship mode where you can just take control over a driver in the official field and have a season of your annoyingly rigid and predictable F1 season.
I think that many of the people complaining the loudest(most) are forgetting that the game isn't targeted directly at them. The game is trying to cater to both the hardcore racing fans and the people who like their games to feel a little less rigid and far less sterile than a straightforward simulation. I don't get the appeal of wanting the career mode to mimic the actual f1 season to the letter where nothing ever changes and the same handful of teams/drivers are always at the top. Seriously If I want to see F1 one Lewis and Mercedes run away with it every year I'll forego the game altogether because I can see that on TV.
There really is something for everyone in the game. It's a shame that it seems like most people(on either side of the argument) can't see that for the positive that it is.