I've been out of the air defense industry for over 20 years, I thought all aircraft had IFF, Military use was Information Friend or Foe. But all Aircraft have squawk number, ident.
I worked as a CryptoTech in the Marines for a MACS squadron and IFF was in our ballpark (It's "Identification Friend or Foe", just to refresh ) But it doesn't work exactly like civilian Squawk/Ident. It actually transmits a signal that is encrypted and awaits the response...thus bad guy, no reply But yeah close enough.
Unfortunately in your case you did the "boo boo" of allowing DJI to update, I never let it do that, mostly in Firmware though. I swipe away all updates until I find out what they are on the "Chatter". There are better Avenues as you know now unfortunately to find TFR's. But hind site...yada..yada.
You take care out there, be safe, track local media, I'm sure they will let you know if "Smokey" is coming your way....as I am sure the local first responders and aircraft flying over head will. I'm sure it isn't your first rodeo to prepare, so I will leave it at that.