Perhaps not, but he needs to be good. And if he's not going to have MVP caliber seasons, someone on the team is going to need to. I can't remember the last world series winner that didn't have at least one (and usually several) players having MVP type seasons.
Half the WS teams from 2013-2021 didn't have a top 5 MVP votes guy. Most of those, but not all, did have a top 10 guy. You can win the pennant without a huge year from a single guy.
If we're going to be good, guys are going to come out of nowhere. Absolutely no one in 2011 thought Chris Davis would be a top 3 MVP two years later, leading the league in HR and RBI. 18 months ago it was questionable if Mullins would ever be a starter, much less a top 10 in MVP votes. Everyone loves Cruz nowadays but in 2014 he signed for 1/8M in late February, was he supposed to be 7th in the MVP race? Yeah, it will really help if we have a Machado who was top 10 three times for the O's, top 5 twice. But that's the point of getting depth in the farm system. It's not Wieters and Jones or bust, there are 8 position players in fangraphs' top 11 who should be in Baltimore by 2024 and probably have the potential for a crazy year one day (maybe I'm pushing it for Vavra and Kjerstad at this point, but then that's 6).
I understand the idea of "you can't count on anybody." Of course you can't. But you don't have to abandon all hope and expect zero either. When you have numbers, which the system hasn't had in the 20ish years I've paid vague attention to the minors, you have much better chances.