You saw the same pattern where Ukraine and Russia both constantly adapted on the battlefield and the war changed rapidly over the first year.
Radar is line-of-sight. A non-stealth fighter flying just above the treetops can only be detected if it gets within a few miles of a SAM radar. This is true to the point that the radar lock range for something like an F-35 is about the same as a non-stealth jet flying super-low (though the hit probability is lower for the F-35 if it's flying at high altitude as it has more room to detect the launch and maneuver).
The problem is that CENTCOM is actively lying to us. After this shootdown, they denied it happened while launching search and rescue operations only admitting to the facts after Iran released the evidence. The same thing happened with the F-35. CENTCOM said it landed safely, but were simultaneously sending an Chinook to run search patterns in the area. This could also mean that the alleged Kuwaiti pilot that supposedly took out 3 of our F-15 was also a lie.
Finally, with so many non-stealth planes getting shot down and stealth allegedly working great, why are we using so many stand-off munitions still and why aren't we using F-35 more?
All the shootdowns have been shown with a custom software showing an IR view and the successful missiles seem to be using electro-optical tracking. The IRST is passive and doesn't trigger sensors plus isn't stopped by our radar stealth. At the same time, a human operator means stuff like flares don't work anywhere near as well. Even more scary, these human-guided runs are premium training material for China to train AI-guided missiles.
My conclusion is that stealth is no longer the game-changer it was once though to be (if it ever was).
I think you're right about stealth not being quite the game changer that it was. The Houthis were able to give f35s some close calls over Yemen last year. They're of course armed and trained by Iran, so we would expect to see some hits.
