I was fascinated by this new user votetoclose. Is this a new way to cast close votes on The Workplace, or just another user?
As of now, there are no special "vote to close" accounts, but even if StackExchange introduces one in future, you can be sure the user name will be suffixed with the diamond (♦) character. Moreover, its purpose will be clearly described on the profile.
Ordinary accounts are not allowed to use the ♦ character in the user name to prevent users from misleading others or misrepresenting the site. It is attached only to moderator accounts, SE employee accounts and the special SE-administered bot account Community ♦.
If you come across more such
troll fascinating accounts ("vote to delete", "downvote this answer", "ban this moderator", etc.), just note the missing diamond. Such user accounts are invariably created for "interesting" activity, which you should also downvote and flag to moderators.