You have a good point. I'm glad that the Cowboys played Camden with the first string in training camp practice, so that he gets to face better and better competition. It was great to see him against 2nd and most likely 3rd string corners... but it will be revealing when he lines up against 1st string corners over the next preseason games. I hope he gets that chance, Flournoy and Turpin don't need too many 1st string reps. Let him reveal his skill, because he's elevating his game against every challenge in front of him so far.
So, I'm just wrangling, and the discussion in this thread has rightly has pointed out that Camden doesn't have the sharpest routes yet, so that could prevent him from having such success against 1st string.
In the meantime, his performance either dictates a mysterious injury for the PUP list, or hide him away and hope that the rest of the league presumes that he won't have any success against starting corners, and forget about him with a goldfish memory when it is time for the waiver wire.