@2:05 : AI didn't see human car that does not follow the raceline ?
Clearly, human not looking before returning to the racing line, at slower than racing speeds.
Yes, the AI was aggressive. Is that necessarily an issue? No. Personally I feel most simracers tend to relegate the AI drivers to second-class citizens, not tolerating a single mistake from them or any interference in the "human's race". "It hit me! Fix it!" That would hardly be realistic though, given that during close racing cars hit each other all the time, even with the best drivers in the world at the wheel (sometimes they even hit others intentionally...).
So, the real question for me here is not that if that was an aggressive maneuver, it definitely was, but whether the AI does that with a frequency that is befitting of the best and most competitive drivers in the world. That is impossible to be judged from one video though. We'll see in a few months.
Also, food for thought, most people driving sims are nowhere near professional and would be quite a hindrance in a real, competitive race, so they wouldn't get near one, not at highest levels of motorsport at least. So, if the AI is good and behaves like a real racer, that doesn't really expect to be racing against humans who would really have no place on a real track, doing random maneuvers and making mistakes all the time, then really, in context it's not the AI's behavior that is unrealistic, but the human driver's.