Why this poll suggestion on the same topic has not been launched?

Hello,

I have a list on the subject "submarines":

https://www.imdb.com/list/ls084243442/

Why this poll suggestion on the same topic has not been launched?

https://community-imdb.sprinklr.com/conversations/imdb-poll/poll-sug-what-is-the-best-submarine-movie/5f4a79cc8815453dba8b3b68?rfm=1&topic_submit=true

thank you.