The problem with Moncada is that he only makes contact with 75% of pitches that are strikes. That is very bad and unlikely to change regardless of how many at bats at the ML level. Its very similar to that of Schwarber which is why he probably won't stay in the majors for very long. Tim Anderson to contrast makes contact over 80% of the time. Fangraphs had an article last year regarding this about Schwarber and showed that no one really improves that rate and the list of players that had similar contact rates and actually had a successful career is relatively small.
Also IMO to keep sending him out at lead off is crazy. Its setting him up to fail. Its normal for you young players to swing at balls outside the zone and that gets better with experience- but contact rates in the zone typically don't. I'm not saying he is a bust but it is very concerning over his first 350 abats.
