This is not just another missile test.
Remember- a stone thrown up - its velocity becomes zero at its maximum height. That stone (projectile) has to hit a target flying at almost 19/20 km/second
A rocket like GSLV carries liquid oxygen and hydrogen for its cryogenic phase. It takes hours to fill it up. Hence it cannot be used as a quick response missile.
This is direct warning to China (which deployed troops in Sindh few days ago).
We are living in satellite networked warfare days.
Even in our daily lives, Everything is linked these days - including your cars, fridge, ACs and what not (internet of things).
An anti satellite missile that we just launched may be launched from a cannister loaded on a container truck standing in some field in central yavatmal district of vidarbha. Or from INS arihant!
So please don’t demean this huge strategic and geopolitical decision : just because you hate narendra modi. It takes balls to give DRDO this approval.