I think this is pretty simple.

The military is required to provide help to those that need it and even those that think they need it and actually may not. So, they have to screen everyone. Not to do so would be negligent. That is what the health professionals are for. They can determine if a soldier doesn't actually require help.

Remember, though, if said professional ends up being wrong, the results could be catastrophic. Naturally, some will inevitably slip through the cracks that don't have a damn thing wrong with them. There are worse things in life.

If you don't need help, don't ask for it; too easy.

Of all the post-deployment mental health screenings I've had to sit through, I think they took up a combined 30 minutes of my time.

The Army has wasted a lot more of my time for much more ridiculous things.