Actually he is quoting based on the lesson taught by history. We cannot take decades taken for K15 as the case study of many of other projects in India are not good example when it comes to comparing time lines. It took decades to get LCA flying but it did not meant it will take decades for JF-17 to get operational at squadron level.
So i suggest that instead of bragging about what you have achieved and being arrogant about it, must contribute something constructive.
But LCA did its purpose .It got necessary IOC.
But when an educated analyst said like that without any explanation it will more resemble to boasting.
Developing our own system within our nation would take a lot of time and money .Be it US or Russia or Europe they spend a lot of decades and trillions of money to develop such advanced system.Otherwise you should have some foreign support or you might be some type of GoD