I'm pretty sure if Lamar had broken a leg bone for all the world to see in it's "Oh my, his leg / foot shouldn't be bent like that"... like the Dak Prescott injury... Harbs would have spent the rest of the season playing the same "We'll see how it goes, we want him back, we hope to have him back, he's working hard to get back" game.
Dak had a major injury that undoubtedly sidelined him for 4 to 6 months (no matter how Harbs would have spun it). There was ZERO question as to whether he'd play again that season. He was done, resting, getting bones fixed, etc. Had the better part of a whole year to recover before playing games that mattered again. This past season, he missed 5 games with the thumb injury. The Cowboys immediately said he'd likely be out a few weeks. There was no week-to-week "We'll see" game.
I think it's pretty apparent that the nature of how Harbs, with his tin-foil hat and "competitive advantage" beliefs, talks about player injuries leads to a lot of legitimately injured players having their work ethic questioned. It's a shame, but it goes back to Perriman, and has repeated with Stanley, Wolfe, and now Jackson, just as the most prominent examples. There's a common thread here...