LOl- the same logic I can say that chinese is not able to make fighter plane because they are importing part i .e enginee.
What a BS logic do you have! Please try to understand the planning, building, development, trials, testing and about other critical phase for such any project.
What Pakistan is doing with JF 17, and others things. India is doing from 1970.
I would take any criticism from Pakistan once they will able to design and make any fighter even a trainer aircraft and frigate ship.
Pakistan still importing/manufacturing and itself tells that how much capabilities are need to develop such things.
You need to ask to yourself:
1. why is still Pakistan still importing OEM fighters and ships? I don't count just doing a nut-bolt/paint job is equal to develop or design something. It is utter non-sense to compare such as.