No, it hasn't ruined scrubs for me because as far as I'm concerned it was over in the season 8 finale. After finding out that Zach Braff will only be in 6 episodes, it's pretty much for certain that I won't be watching after he's gone. The fantasy scenes are even more forced than the bad ones we've seen in season 6, and some of the jokes are downright stupid to a point where I'm laughing during the joke, but at the writers, not the joke. Cheap jokes fills both of the first two episodes, since when was Turk a racist, there were moments before where he'd bring up things like "so a brother can't swim?" or "why has it got to be a colour commentary cause I'm doing it?", those were funny, but never "I'm going to grade you all by the colour of your skin, raise your hands if you're white, F", imagine if a white character did the opposite, it's not funny, it's not exactly racist, it's juts plain stupid, like the whole not understanding the Australian accent thing from Dr Cox, or the crying cartoon portrait where Lucy says she looks Chinese because the figure's eyes are closed, very very cheap jokes that aren't even funny.
Without Eliot and Carla, combined with the effort of the writers, Turk and JD now act like an incredibly opened gay couple, which I have nothing against, but it never was what they were about, Dr Cox is actually becoming an unlikable character in the show, which again, was never what he was about, and the new characters, are forgettable, Lucy's basically a female version of Josh from one of the med student in season 1, Cole is a better looking version of Phil, all in all they aren't something we haven't seen before and worse yet, they are not likable characters.
I find it hard to see this show going to season 2 (that's right, I'm calling it season 2 because as far as I'm concerned this is the first season of another show that's already on its way out), but good news for us fans is that Bill Lawrence has made it clear that this is not Scrubs, but Scrubs MED, an entirely different show that has nothing to do with the the former.