If they were crucial, you're using a really low bar for what is crucial.

Kupp had 2 drops in the Rams first offensive series of the game.

They were in the first 3 minutes, which means there was 57 minutes of football played after his two drops.

The Rams got the ball 9 more times after that first series.

Kupp's drops were shocking because of how great he is, but they were not crucial in the outcome of the game.

If that counts as crucial you need to probably add about 25 other things that happened in the game to the list of crucial factors