I agree that the vast majority of scoring attempts from scrimmage kicks are tries and this is less of a concern for a try. However, FG attempts are non-zero and if a team has a kicker that can make kicks, they will use them often. I'll see maybe 5 FG attempts all year, and they're all in the same game.
On a long field goal, you're also more likely to see a serious block attempt which increase the risk of RTS but also jumping over the line/potential hurling/did they go through the a-gap, etc..
Once the kick is airborne, the U is watching the ball to judge the score. R has potential RTK and is watching the back field, the wings can see the ends, who is watching the middle of the pile? It's one of those things that won't be an issue - until it is. When it happens though, we're just going to miss it. If we're cool with that, then we're cool with that, I guess.
As an aside, I've recently been thinking about clinic topics/discussions that get glossed over. One of them that I keep coming back to is that we focus a lot on initial positions, keys at the snap... and then just stop having guidance. Partially that's because what happens after the snap is very unpredictable, but I've been trying to think about "What are you looking at 5 seconds after the snap?"