Since you asked, here are some clips of him at EDGE:
:18 playing the flats and looking natural despite his giant size.
2:20 great lateral quicks and awareness for a TFL
2:30 destroys the TE, easily rips around the pulling guard and gets a sack
2:52 bullies the RT into the QB with power, shows quickness and awareness to redirect and get the sack
3:17 redirects with quickness and awareness (a common theme watching Rousseau) and gets the QB to the ground
3:38 flies from the backside, squares up and makes a huge tackle on 4th down
3:50 fights through a double team, finds the QB and blows him up to jar the ball loose with perfect form tackle at 6'7
4:24 gets off RT block easily and makes another form tackle, getting low at 6'7
4:34 drops into coverage, good awareness to take away the crosser, make a decisive move to the QB and then cover ground in an instant to force the sack
4:44 shows great redirect and awareness to retrace to the QB and get him down before he breaks the line
4:58 forces the QB off his spot with his rush, then redirects and gets the sack
6:32 blows up the zone read because he's so long, quick and aware. He basically accounts for two players
7:40 speed to power, sack
7:57 fights off double team and sets a great edge
8:04 length destroys another zone read
8:13 gets UNDER the pulling guards (he's 6'7) and makes the TFL
He rushed inside so much because it worked. Only Chase Young had more sacks. That doesn't mean he can't get it done outside, in multiple ways. 2019 was only the tip of the iceberg in terms of his potential.
@HighSeas