Looks fabricated to me.
A rather transparent attempt to generate donations for Buttgig by showing he has a chance, while not overly upsetting to the Berniebots.
It is. Its another Hillary Clinton Production! Shadow, the company that is bihind this, has a crap load of her minions running it!
Reportedly, Mayor Pete was the #2 choice of a lot of voters in Iowa. So when their candidate was eliminated in the primary round they moved over to him.