Seems we were not the only ones that noticed this very enthusiastic crowd for Bloomberg:
https://slate.com/news-and-politics/2020/02/michael-bloomberg-had-very-enthusiastic-audience-support-at-the-debate-for-some-reason.html
https://www.rollingstone.com/politics/politics-news/south-carolina-debate-crowd-bloomberg-team-denies-buying-the-room-956447/