Lol. No. It’s a multi billion dollar boondoggle.
No “foreign threat” is going to be transmitting ADS-B out other than spoofing a hundred fake targets around their real one. Or pretending to be an airliner or other known arrival.
It’s just poorly designed make work for thousands. It adds very little real value for the total price tag.
The aviation world leans toward being gaga about it because it’s been stuck in the 60s for so long, people think 90s tech resigned in the 80s is just spiffy.
Look at the Garmin instrument display announcement. Oooh ahhh. Computers that display things on high res small screens!
... that’s fifteen year old tech. LOL.
Aspen got WAY out ahead of this a long time ago and then stopped. Strategic mistake.
But even Garmin’s “latest” is ridiculously out of date compared to what’s in the rest of the tech world. And they tend toward only releasing strategically to kill competitors, not really even attempting to stay leading edge and nowhere near bleeding edge.
It’s just aviation. Old tech. Old rules for certifying it. For old people. Normal.