Lol, because as explained, the one has nothing to do with the other.
If a civil airliner lose contact to ground control, do you send a fighter or a SAM?
If you have to support ground forces with CAS, do you send a fighter or Brahmos?
If you want to counter a PLAAF CBG, do you send MKIs with Brahmos to them, or do you wait till they are close enough for shore based missles?
The fact that IAF integrates Brahmos itself, should make you understand, that there are operational advantages, because a missile launched at high altitude has longer range, than launched from the ground and the missile can be carried further to the target, which greatly increase the strike range.
So we can put your whole theory about IA missiles instead of fighters to rest.
You obviously are not following the news or satellite imagery about their operations:
https://theprint.in/2018/02/14/tibet-sees-jump-in-chinese-air-force-activity-after-doklam-standoff/
For more PLAAF vs IAF please use a dedicated thread.
Another statement that makes no sense!
A fighter by design has certain limitations, be it radar size, that is limited by the nose diameter, internal space for avionics or fully integrated EW, external space for IRST, EW sensors, hardpoints, hardpoint limitations due to size and weight limits...
A light class fighter therefore is limited "by design" to lower capabilities, than medium or heavy class fighters and no matter how much wishful thinking you add, you can't beat the design limitations just like that.
That's even why the MK2 needs an extended airframe, to counter at least parts of these limitations. Not to mention that the priority of the MK2 upgrade, is to give Tejas the flight performance, to be a useful interceptor in the first place.
To counter J10s, with a high manoeuvrable design, good flight performance, a medium class radar, IRST, that also is supported by AWACS and tankers, you need an MMRCA, with at least comparable performance, sensors and weapons, if not better!
That's why more Rafales or EFs would had been great, or why the Gripen E is the better choice than F16 B70.
Which still wouldn't change a thing, because the additional 36 would be placed at the same 2 air bases, so you have 36 against north western enemies and 36 against north eastern, but none to the south west, or along the cost lines.
Which means we remain dependent on the MKI and that means high operational costs.