I don’t think Buttigeig could have pulled this off in his own. Hillary is behind Buttigeig’s rise, so to speak.
You will be shocked how many LGBT people post on DUmmies. No one is allowed to make even a tangential negative remark about any LGBT issues. Which could explain why Buttigieg spent so much money in Iowa and had so many volunteers working there. In a small state with Caucus system, that can make a big difference.