It might matter in the standings though. If the team is out of it in September, using a month of service time then and not in April-May might be transferring a win from 2019 to 2018.
We've seen guys like Harper, Machado, Acuna, and Bellinger hit the ground running - Vlad could very well be an impact player of that caliber immediately, and having that out of the lineup for an extra month of 2019 could hurt.