I don't think this is going to change anything - the Nats built a very expensive and fragile roster and it worked out but it was so f***ing lucky. They won the lottery when it comes to avoiding significant injuries to good players. They had essentially no good players suffer a significant injury this year, unless I am forgetting something. Rendon, Soto, Robles, and even Adam f***ing Eaton all got 617+ PA. Trea Turner broke a finger and missed a couple of weeks. Their top 4 pitchers all made 27+ starts and Strasburg/Corbin had clean seasons.
We've seen teams built like this in the past - expensive, old, good, and thin - and it very rarely works out. One quad strain for Rendon plus some elbow inflammation for Corbin and they might not even make the playoffs.
This is not a template and it should not / will not alter any trends.