The "pen-testing" discoveries go both ways. In Iran, Chinese HQ-9B surface-to-air missile systems and YLC-8B anti-stealth radars failed to intercept any aircraft. In Venezuela, Chinese JY-27A early warning radars failed to detect approximately 150 incoming U.S. aircraft. In Pakistan, Chinese HQ-9B and HQ-16 systems failed to intercept Indian strikes.
Not really. US, a competent operator of US made platforms losing hardware to Iranian box of scraps is different than third party operators vs overmatch environment, i.e. Pakistani had pathetic amount of IADs vs India, and by all accounts VZ didn't even integrate theirs.
IADs not integrated by marginal operators =/= stealth radar didn't work aka, physics of stealth detection is basic, and parsimonious likelihood is US gave up strategic intangibles for VZ and IR side shows. Even if IADs wasn't integrated it would still be worthwhile for PRC to send out stealth radars knowing they'd get glassed because it's rounding error investment to get near F35s without luneburg. At the end of the day, these radars are networked/uplink to beidou3 for a reason, their primary function for PRC is to serve as cheap telemetry gathering nodes that gather strategic US ephemera like stealth profiles, ew, order of battle and beamed it back to CETC.