There were 2 articles I read, one had a paragraph about the use of analytics by the coaching staff and the pride they had as being among the more advanced coaching staffs in the NFL in using analytics.
The other had a quote from Vrabel below that has been misinterpreted by some that he doesn't use analytics and goes by his instincts.
Like when BB did not call TO before the Wilson/Butler interception play because he saw confusion on the sideline despite the fact analytics say call a TO. Vrabel uses analytics, but he doesn't 100% follow what analytics every time because it is a percentage, and you have to balance that with what you know on the field. Obviously is the analytics were overwhelming in favor he'll do it. But 60% to 40% he balances that out with his knowledge and instincts.
Ive read this graft of text, without your context, so let me admit that I might be in the misinterpreted tier, but, in my 'research' I did some digging into old titans boards/reddit as well which re-affirmed my first interpretation of the text, so I'll present it first:
starting with main topic, these 50/50-ish decisions, he would use statistic WHEN it aligned with instincts. That doesn't suit well with me, because I understood that in a battle in analytics and instinct, instict would always win. You say he balances analytics with instinct, I've felt* he supersede them in these borderlines cases. Which I still do like.
Now to go to something that is more personal, which is his first paragraph. To me, it's outdated. To say that the data that we are using now is the same as always, expressed in "been using analytics forever", is just not true. Right now, Data anlysis use "Real time data", not really the same as to Probabilities tendencies of positional groupings. It's much much more evolved, but, from this graft, he doesnt transmit that energy of having close affinity to 'micro'-data (and to be clear, obviously Im biased since I live in the data analytics world, in a way)
With that out, I wasn't aware that the FO in Ten was this enthusiastic about data approach. This was almost 10 years ago, and it the technology world, it's a lot, so he needs to be ready for more. If, as you say, isn't against it, then I'd be glad to have him onboard, making his OC choice less worrysome - I do not know enough about Tim Kelly to provide an opinion
*and again, felt is the word here, not "know" or "think", as I have grown distant from the NFL in general the past years, and only dug into this very recently