Taiwan maybe small but its also highly urbanized one side, so lots of dense urban jungles to hide these missiles and also a huge mountain range which are basically woodlands, again highly suitable for concealment.
Also, no matter how good the training of Chinese Air Force is, this does not solve the fundamental problem of dense Air Defense Networks. Missiles are super fast and much faster than planes and its much easier to hit something with a missile than it is to evade. So, Taiwan could manage to have HUNDREDS to Thousands of Patriot missile systems, which can be easily donated by the US, So Taiwan will not have to pay for it.
So, how would a PLA Air Force with Just 2000 combat planes of which maybe 5-600 maybe used in a Taiwan Scenario to keep a good reserve for other contingencies, deal with a dense network of Air Defense Systems? Good Training is simply not a good enough answer to this challenge. There has to be some kind of fundamental strategy that can comprehensively defeat this scenario.
Is there any technology that can comprehensively defeat a dense network of Air Defense Missiles? Even Stealth can be detected by Low Frequency Radars.
So far, it seems there is no easy answer for this for China. They have to take huge losses in planes in order to beat these air defense missiles using SEAD, assuming they are very good at SEAD also, but still they will take losses due to the fact that missiles are faster than planes and sensors are very good these days in missiles.
Does China have the numbers to beat an Air Defense Network with 1000+ patriots? I don't think so with Just 2000 planes. They need to increase their number of planes to 6000+ maybe. Or they have to do what Russia did which is to give up on Air Superiority and simply rely on missiles to do strikes.
Moreover, relying on the Army for Taiwan war is a complete non-starter. If China is not able to destroy the Anti-Ship Missiles or Intercept them, then the Army cannot even land on Taiwan without getting sunk by those missiles. China needs to have a huge fleet of Air Defense to intercept these missiles while transporting the invasion force. Again, it becomes a numbers game if Taiwan gets Supersonic or Hypersonic Missiles. China will lose many ships unless they find a good technology to intercept these missiles.
So far, it seems no one has been able to provide a convincing strategy to beat the Porcupine Strategy. Just some wishful thinking that Taiwan is too small or PLA too good in training.