You are over-emphasing this conflict from the air force point of view. The PLARF and PLAAF does have the ability to fire the 1500km ranged CJ series Cruise missiles from both land and air. Not only that, there are also the DF series SRBMs and MRBMs that can strike India from deep inside Chinese territory. PLAAF strike jets like the JH-7 and J-16 could deploy glide bombs and lob them from behind the mountain ranges like the Israelis do over the Golan Heights to hit targets in Damascus. Then there are the UAVs and UCAVs at China's disposal. The Chinese are not totally helpless with their standoff weapons options.So this brings me to my main point. I understand that it is easy for members on SDF to develop tunnel vision in such echo chambers as SDF (not that there's anything wrong with that), but people are missing the big perspective. I'm getting the feeling that there is a undercurrent assumption among SDF members that the PLAAF and PLA would steamroll their Indian counterparts if the Ladakh standoff ever goes hot, but I have my doubts, which I will explain.
IAF's biggest and perhaps most prominent aerial assets in the region are the Rafale, Su-30MKI, and their new Phalcon AWACS purchase. We know that the Rafale and Su-30MKIs have been deployed to Ambala AFB and other FOBs near the Indo-Chinese border. We also know that the IAF now operates an unknown number of Storm Shadow ALCMs (with 500+ km range) as part of their Rafale package and that their Sukhois are integrated with the air-launched BrahMos (400 km range). The IAF essentially has the hardware to conduct deep strikes against both PLAAF bases and mainland cities/infrastructure while remaining relatively impervious to Chinese anti-air and anti-missile defenses. Sure, neither platform might stand a chance against the J-20, but neither would require much of a hop in order to release their standoff munitions.
The PLAAF, on the other hand, doesn't have anywhere near India's air-to-ground capabilities deployed near the Ladakh region. Their J-11s are not capable of A2G combat while their JH-7/H-6K have no air-to-air capability required to exploit their full payload potential. J-10Cs are not integrated with long-range ALCMs while the J-16s have barely begun deployment in the region. The J-20s - if used at all - will certainly not undertake air-to-surface missions against IAF airfields.
The PLAAF would be forced to be on constant alert for incoming IAF munitions & aircraft while dealing with unstoppable strikes by way of terrain-hugging cruise missiles from Rafales, leaving little to no available assets to conduct air support operations against IA ground forces.
Couple that with their Phalcon AWACs, S-400 missiles, and large contingency of legacy airframes like the Mirage and MiG-29s, and the PLAAF would be opening a can of worms if it attempts anything.
The Storm Shadows from India are the most immediate danger to PLA forces, but there aren't going to be enough of them available to truly win a shooting war with the PLA. The Storm Shadows are also not undefeatable. Some have been shot down by Syrian antiquated S-125 SAMs back in 2017.
Brahmos are available in large numbers. But they are essentially Mach 3.0 AshM. They are not going to maneuver around the mountainous terrains like a dedicated CM. They will fly a lofted trajectory. So they are easier to spot and intercept.
China does have a fully integrated Air Defence Network. They have a plethora of SAMs and Radars at the border area. From HQ-9 to HQ-16 to the Sky Dragon 12 to deal with Indian incoming missiles.
China does have to watchout for those S-400s because they can hit PLAAF aircrafts flying well within Chinese airspace. But the mountains can be used shield their approach from Indian Radars.
Yes, I agree that we must be realistic that India does have options to really hurt Chinese forces and cities. The CCP has even given a statement in their Global Times mouthpiece that India will not be underestimated. But we must not forget that China is far from helpless in striking Indian targets and cities. New Delhi is within easy reach from a variety of Chinese missiles.