It might be obnoxious to you, but it would be a necessity with the current bot problem going around. It's obnoxious as-is, but could you imagine how much more of a pain it would be to deal with if the bots had a convenient little button that lets them duplicate or even triplicate their spam fancasts in the blink of an eye? It would be basically impossible to find any actual fancasts because you'd have to comb through a gigantic sea of spam "fancasts", not to mention it would make the staff's job harder because they'd have to spend even more time cleaning out spam fancasts, and with the team being as constrained as it is, it would also leave fewer people available to deal with other on-site issues because they'd have to direct more of their attention to dealing with bot spam.
If properly implemented, it shouldn't even be a bother for actual users—just the bots who constantly spam like, 20-50+ spam ads all the time. Even if it doesn't have anti-spam, there should at least be some insurance against bots, because we all know whoever's behind the bot accounts would immediately abuse a feature that would allow them to easily make complete clones of their spam fancasts and not have to put in extra work to make them.