The majority of the article was sensationalized journalism. Outside of the Taiwan missile issue, the rest of that stuff isn’t exactly high on the DOD’s radar.
I used to run almost everyday in Iraq during the one of the most dangerous times to be there. Doesn’t matter if I had a tracker device or not, my actions and others are automatically predictable by virtue of being there. Soldiers doing PT isn’t some secret. They do in the open every day and anyone within viewing distance outside the base can easily see them. Both sides really don’t care.
Deployment schedules for divisions, carrier battle groups, MEUs, etc, are posted publicly weeks/months in advance. You can get a Navy, Marine, Army, AF Times and see where major deployed units are around the world at a glance. The enemy knows when and where we’re going and there is a significant paper trail before departure and after arrival that can identify individual servicemembers to that area. They don’t care.
Overseas aircraft operations alone are predictable. Just go on google maps and you can see military aircraft at airfields in combat zones. The enemy could sit outside an air base with some binos and a scanner and watch/listen to tower and CTAF traffic. I used to laugh when some guys would “sanitize” their uniforms prior to a mission. Heck, you’ve got an air base website that has articles in it that identify pilots by their name and rank already. No point in trying to hide it.
A little common sense needs to be used with opsec procedures. The majority of the stuff that can be obtained from PEDs is of no use to the enemy. No one is bringing a personal smart phone with them on some clandestine “Bin Laden” type raid. Even if they did, by the time the bad guys found out about it and deciphered it, it would be too late to be of use.