It is useful because you don't have to search for that event in your recording (especially useful if you record a session that's at least 1hour or more)

People who would like to see that future will benefit but I cannot guarantee that everyone will benefit, as mostly content creators will use it for their videos.

The game has to detect if and when someone died on any level at 90% or above and just place a bookmark in the recording or generally highlight the time it took place, so content creators no lponger have to go through hours of material searching for the correct spot in the recording.