I was a Navy pilot. 200-300' is the absolute minimum on low levels. Go lower and learn to dance on carpet. The A-6 has a special coupled low level radar guided mode. It is hands off, computer does the flying. From the impact site pic, it looks like he hit at an unusual attitude, small trench to big crater. When they slide in at a too low altitude they slide and cartwheel, big debris field. Same if in a turn. This one did a meteor style crater, with a debris plume. So something beside having his head in his rectal cavity happened.
Going low to avoid radar days are indeed over. The radar tracks your doppler shift, not the return. Only shifted returns are processed by the system, and that is filtered for speed. The reason for low level nowadays is to take out SAM sites, they don't work at low altitude. The EA-6 will trick the site and fake an altitude to the sites radar system by playing with fake returns. Then fire a HARM missile down it throat. If your up high, it is harder to fake out multiple sites, they all tend to network these days. The missile work by illuminating your aircraft with very high scan rate radar. The missile tracks the reflection of your aircraft, its called beam riding. The missile lacks the processing power to do AMTI (Airborne Moving Target Indicator), so again low messes it up.
Military pilots will continue to piss off farmers and ranchers, always have and it will continue. If we want timid pilots then they will never deviate from the rules. If you want pilots that win wars, we got to mix it up a bit. This is why you have to pass a boxing class and do three bouts to become a Navy pilot, we have to be aggressive. Ask the Germans, Japanese, North Koreans and North Vietnamese pilots if they want to mess with our guys again. Navy has bought a lot of milk, eggs and baby sheep & cows over the last 100 years and hopefully continue to do so. Otherwise we will have a bunch of politically correct soft spoken pilots that are systems engineers and sensitive guys & gals.
A few of us die along the way. I personally watched 7 of my friends die while in the service, its a tough life and having dead friends is just part of it. Sad when somebody buys it. THe EA-6 is old, really old and most are so old their wings have had to be replaced. They do tend to just fall apart in the air now. A lot of the stuff is over its service life, it has been flown to death and life extensions have been penciled not riveted.