Whilst agreeing with your concerns about the easiness of tool-clicking making it a literally mindless task, I see the CSD cleanup aspect as being even more damaging than the bill-sticking. We have a regular situation where a NFC (or simply WP-hosted) image is removed from an article, GF or vandalism, and within moments it's then tagged for CSD as unused. There is no attempt to manually check if it ought to be used, or even if there's still a FUR in place pointing to an article from which it has just been vandalised. There is a lot of this (and mostly from the same handful of editors). It's a serious problem where bureaucracy and the opportunity to do more serious admin bizniz has taken over completely from the direction of improving the encyclopedia.