I'm fundamentally against the decision to go for it, regardless of the play call, because it puts us in a high leverage situation that increases the pressure on our defense unnecessarily.
I think we keep putting in our team in situations to fail and I don't think any possible momentum we get from succeeding is worth the damage we continually do to ourselves when we fail.
I mean, I'm also fundamentally against the play calls, yeah. Why did we run 2 straight plays if we were going to go for it on 4th? Like, for all the crap people LOVE to say about Geno, pretty much everyone and their mother--whether they admit it or not--knows our offense pretty much relies on him to carry it.
So, at least on third down, why aren't we doing a screen or a play action? Why aren't we giving Geno a chance to get them to jump offsides (which he did a billion times this game)? So, yeah, the play calls were terrible.
But I also just disagree with the decision philosophically.
So 4th down -- worst case probably is a turnover on downs, they get the ball at the 20 and need to move it 40+ yards to win. You have a chance at putting yourself in position to win the game. If you kick a field goal, they get the ball slightly better position and once again need 40 yards to tie (or win on a TD).
No matter what, Rams need at least 40 yards to kick an either game-winning or game-tying FG and you're 1/2 yard away from giving yourself a chance at ending the game.
Seattle has given up an offensive score in 37% of their drives (coming into the game). You should feel confident in your offense getting .5 yards.
I genuinely think it's nearer a 50/50 to go for it. I did some math.
Odds of gaining 1 yard: 65%
Odds of scoring a TD from the 15: 50%
Odds of scoring from the 15: 88%
Odds of scoring a FG from the 15: 38%
32.5% chance of ending the game immediately
15.5% chance of winning game on next drive stopping the rams after scoring a FG after 4th down conversion
Total of 48% chance of winning going for it on 4th.
Odds of making 4th down FG: 92%
Odds of stopping the Rams from scoring: 63%
57% chance of winning with a FG on 4th down
So yes, statistically speaking, kicking a FG on 4th down is the right move. But it's not such a gap that it's egregious.