[indymike]

Not correct because of physics. Ground based radar is still blocked by terrain and the horizon, meaning that low altitude attacks are still quite effective against only ground defense. That is why Ukraine's air force still exists and is still causing issues for Russia. It is also why shaheed drones are causing problems for Ukraine.

The bigger problem for low altitude attack is AWACS + fighters and interceptors with look down/shoot down capability. The MIG-31 has been a major problem for Ukraine because it has long range radar + long range missiles that can hit low targets. NATO and other US allies have integrated air defense where data from AWACS and other aircraft can be used to target low altitude targets.

As far as stealth goes, the notion that stealth aircraft can be targeted at medium ranges has not been tested on the battlefield.