Did you read the quote from Kyle Shanahan on analytics I think from the same reddit thread? Basically, says the same thing as Vrabel but more detailed. He says analytics is a tool but can't compensate for certain factors and thus it needs to be used as a tool and not a be all. Vrabel same thing.
The Browns are one of the more analytic oriented teams in the NFL and he was just there for a year.
Also, from after they fired Vrabel
The Titans wanted to make this season about evolving and modernizing their process behind the scenes. Building a roster with an increased reliance on analytics has been a big part of that. Vrabel wasn’t resistant to using analytics on the field — he and his coaching staff believed they used data-based decision-making as much as anyone and often get credit around the league for being one of the top situational football teams in the NFL. However, the coaches never felt informed on how the new personnel department was using analytics in its process, a team source said.
Honestly, when I first heard Vrabel I had a lot of doubts, old school, run the ball, doesn't rely on analytics, smash mouth football guy. Now that I've read about him the guy has a pretty high, maybe even brilliant, football mind.