Well Battlefiled 1 Multiplayer uses all 16 threads, specially in 64 player games.
There might only be a few games now that can use 16 threads. But there will be more in the future utilizing them.
Also Photo editing, video encoding, 4k videos, etc. The Ryzen is a beast with all those!
I can load up Doom, Photoshop, Youtube 4k videos all at the same time, and Ryzen handles it easily without a sweat.
Here's some screenshots with some data you wanted.