By the time the camera caught the official running into the frame, it showed him clearly waving the play off. If you use the officials at the bottom of the frame for reference, it looks like the guy ran 20+ yards, much of that before the ball was snapped. And it didn't matter if he impacted the play, because the play didn't exist at that point.
https://twitter.com/i/status/1619886534320357376
I'm pretty sure you're not thinking that an official can't stop a play without a whistle, or with a non-functioning one. There was clear intent and
action taken to stop the play, whether a whistle could be heard from that far away over the crowd noise or no. What the officials
could have done is irrrelevant, because the play didn't happen. The official, who realized something his peers didn't notice, determined that he needed to stop it and took clear action to do so. Didn't matter what the outcome of the non-play was at that point, nor did the official's action consider it when he ran in from the sideline.
There's nothing to unpack. There absolutely was a correct decision for that situation, the official determined what that was when he ran in to stop the play, he conferred with the other officials, and that was that. And no, I'm not going down a rabbit hole involving what you consider "soft" calls, or what you think officials should have called or when you believe they should swallow their whistles.