All this goes with many 2 star games. But what really is the hammer:
Codemasters has told months, they would implement much on feedback from the community, creating an unprecedented Grid. Result: The physics is no longer designed for drift, a few cars and tracks were added (the typical DLC criticism) and there has _NICHTS_ changed. The statement you have heard on the community: cold lied.
And the updates? Make it only schlimmert. Without the classic "flying" Reset the weekly challenges are even worse.
The Challanges: more than brainless. It is crystal clear that there is no one tried the challenges before the release. KI-degree "medium" is enforced, what a slalom race at a terrible but poor AI created and destroyed every motorsport character. Similarly boring is the single player, in which case of course the difficulty can be adjusted (everything except very difficult just annoying). Together with the unnecessarily aggressive behavior (Grid 2 AI -> In the Open Wheel is different hazards!) Rarely more than 50% of the AI players in the destination. And I more than once every 5% ..
Conclusion: It makes no sense to play the game, let alone spend money.