I like the reporting system, sure some people report for anything but most dont and it helps a lot with many abusers who just rides over anything to get that precious kill, shoot into melee containing mostly friendlies, "friendlies" standing on ladders kicking, tards just swinging wildly in melee and never caring who they hit etc.
I th and tk occasionally but I try hard to avoid it and I´ve never been kicked even with ragereporting. Nor do I report accidental th/tk, frankly I think this concept has a lot of merit.