The 2001 squad collapsed over the bizarre trade and Guzman going down with an injury. They felt like a "team" and they wouldn't be able to get it done without everyone in place. I think the team aspect is very similar to this team.
I don't think that's the case at all. The 2019 squad started the season with Sano, possibly their best slugger (though everyone's so good right now it's almost a moot point), on the IL. Later, they had their two best overall hitters (Cruz and Garver) go down for a few weeks each.
The team played some of its best baseball during that stretch of play.
If a pitcher goes down, things could get ugly, but thus far the team has weathered some really good players spending extended time away from the field and no one missed a beat.