Thread:Ducksoup/@comment-25054847-20150329175835/@comment-4902411-20150329202625

It is a ToU violation.
 * You further agree:
 * Not to [...] obstruct the proper functioning [...] of [...] user interface and functionality by other users, including but not limited to changing or adding javascript or CSS changes to the Service that would prevent the proper [...] function[ing] of [...] user interface and functionality;
 * &mdash; Terms of Use

I also recall a wiki implementing a similar script that didn't allow users to chat unless they had a set amount of edits, which was ultimately taken down by staff.