I think people should probably give these changes a week or two to shake out before writing long screeds with lots of exclamation points. It may change driver behaviors and it may end up as a net positive. If it becomes harder to be SR S, well many people were lamenting that before the changes. SR S should be the cleanest of the clean, the "aliens" of clean driving. If you want to trade paint, do that down in SR B or something.
The only thing I've seen that I disagree with is forcing people to scrub off penalties immediately and sitting on straights, leading to tracks that feel more like you're driving in a police chase on a freeway, dodging traffic, instead of driving on a race track. Either they need to ghost drivers who are scrubbing penalties, or in my preference disallow scrubbing completely and just take your licks.