A baseball season isn’t necessarily one full marathon. It can be many seasons within one. Player performance goes up and down like the stock market. A large part of being an effective manager and general manager is managing the peaks and values. Obviously, you want to steer into the peaks and mitigate the valleys. It’s a harder job than it looks.
A part of that difficulty comes not in deciding to heed information, but which information to heed. We have access to fan centered data. It certainly has revolutionized the way fans view the sport, but how much utility it has for teams is unknown.