The reason the A-10 is going away is simply economics.
Correct. Its not good enough for its cost. If it was cheap, and okay they would have kept it. If it was expensive and excellent at its job, they would have kept it. The Air Force flies plenty of planes that are expensive
economical, but worth it for there capabilities(U2).
This looks like something AI would say with complete confidence. It makes sense on its face, but it's absurd to anyone who actually knows anything about the subject.
APKWS II are $22,000 laser guidance kits mounted on Hydra 70 rockets. They entered service in 2012, so you can only imagine newer iterations would have gotten cheaper since than. Granted, they wont kill anything with more then light armor, but it is absurd to pretend that technology has not made precision guidance cheaper. Each A-10 round is at least $100, and they shoot 65 rounds per second. It would be reasonable to infer that they are only shot in 2 second bursts. It very quickly starts to add up, and become comparable to cheap missiles.
A-10 and F-16 now use the APKWS II to shoot down drones.
The Russians are doing the same thing by mounting Geran drones onto SU-25's. I know the Department of Defense can make even the cheapest things cost a lot of money, but sometimes they don't. The American Shahed copy, called the Lucas drone costs $35,000. Still likely twice as expensive as the Iranian and Russian variants, but its very reasonably priced for American standards.
it was made for close air support.
Correct. The theory was that it would take time for NATO to mobilize in the case of a Soviet invasion. The concept behind the A-10 was that each aircraft should knock out at least 4 tanks, before being knocked out of the fight itself. It was not designed for fighting insurgencies in Afghanistan. If that was the goal, I am sure the aircraft designers would have designed it very differently.
And for the record, when tanks needed extra encouragement, they brought along Maverick missiles, because nothing says "reach out and touch someone" like 125 pounds of high explosives designed to specifically kill.... or you ready for this... wait for it........................ little more.. that's right TANKS.
The A-10 gun is excellent. No one is disputing that. The link you posted shows them having killed 16 tanks(12 with mavericks, 4 with the GAU 8, and likely heavily damaged 10 others with the gun). If the A-10 has been designed without a gun, it would have been even more efficient, it would have saved a lot of weight and fuel, that could have been used for more missiles.
The last A-10 was built more then 40 years ago, so it would be unfair to compare it to modern aircraft. Even though its received a major overhaul, the A-10 is still an older airframe no longer in production. This makes it uneconomical to overhaul once more. If you wanted to restart production, it would cost so much you may as well do a clean sheet design. I am not sure it would make much sense to design a CAS/COIN replacement with such a large gun for the reasons stated earlier. Anyway, I know I am not completely rational about the A-10, and don't disagree that its not a useful aircraft.