Here is the Shanahan Quote, its long and it is also older(2017)
but goes along the lines of what I believe Vrabel believes
The 49ers head coach offered some thoughts on how he uses analytics.
www.ninersnation.com
[Shanahan] “First of all, I think there is no absolute answer. I know you can get the analytics, and go with percentages and things like that, but there are penalties, there are missed field goals — there’s different opinions. And that’s why a lot of times you’ve gotta go with your gut, which is usually what I do. I always listen to the analytics, I hear the percentages, and then you’ve gotta go with how you feel.
“We were down two points when we were running the ball [regarding Bears game]. If they would have let us score, we probably would have scored, because I hadn’t told them to not do it yet. I was starting to do that on the last place, and that’s when I started to take a knee. And the reason being is I’ve had too many things go wrong in the past. When you’re down two points and someone is giving you the lead, that field goal isn’t guaranteed. I know field goals are high percentage, but you get a penalty, you get set back like that — we lead the league right now in red zone penalties. And the last two times we were down there, we had 2nd and 1 and got a number of penalties. I’m nervous about getting pushed back a little bit.
“You don’t want to be too picky and be too cute with it, but you also want to make sure you don’t give them time to come back. And I thought it worked out perfectly. Once they did tackle on the last power that we ran, we quickly went to the knee, and thought we could finish it with the field goal.
“But there was no exact answer there. And I’ve got a guy who helps me with the analytics standpoint upstairs. His name’s Cordell. We were talking about it through the whole exchange, and we didn’t feel 100 percent on what the right answer was until we took that knee.”
“I sit and meet with our analytics guys about once a week and go through stuff. It could say it’s a 95 percent field goal, but that doesn’t say what the weather is. That doesn’t say maybe your long snapper has been struggling. It doesn’t say how your kicker’s been struggling because of what happened the week before. There’s so many variables that go into things in the NFL — weather, home or on the road — that you can’t always take that stuff as absolutes.