Bichette played himself onto the team if his spring training performance actually had any chance of putting him in the bigs. Bo just came off a full season of AA and is 21.
Vlad was 19, didn't participate in the full big league spring, had 48 games played above Lansing in his career, and missed a month in the second half of 2018 with an injury.
I don't see how the situations are closely comparable.