Buttigieg is 38 years old. His previous jobs were with McKinsey and "military intelligence" and his previous election total was 8,000 votes. He isn't trying to
win the presidency. Iowa itself is a tiny state with a tiny number of convention delegates. The whole point of Iowa is that the winner gets some momentum. In this case, the winner won't get any momentum. That's the point.
Some people like to bore us with the "once is a coincidence" maxim. Some of them might like to pretend that this caucus is "once" and we'll have to wait a week or two to get upset about the ratfucking. Normal voters can remember four years ago, however, and this isn't even just the fourth time the national "Democratic" apparatus has ratfucked Bernie.