The St. Louis Blues, the same as just about every NHL team, are pretty confident they made the right picks given the selections they had at the 2018 NHL Draft. Fans all have their opinions, but a full judgement on this draft might take years.
One bad thing about being a hockey fan in the states is we are too used to other sports. Most draft picks in the NFL and definitely in the NBA are expected to make immediate impacts. If they are not playing by their second or third year, they were not worth it.
Hockey is completely different.