I think this team can play physical on offense, they just opt not to for the most part, per playcalling.
I mentioned this in another thread, but on Jay Ajayi's 23 yd run against Buffalo, the whole line was blocking fast and strong. Dallas Thomas, Turner, Pouncey, everyone was getting out in front and pushing defenders along pretty soundly.
(I'd link to the vine of it but I can't find it.)
If these guys were 100% soft, they wouldn't have much success doing this. With more snaps for Jay, I think we could see a lot of offensive push throughout the game with him trucking the ball more often.
I've seen it before like when Moreno ran wild over New England -- get a guy with momentum moving the ball, and the supporting cast will follow in the same intensity.