Already discussed in IVC and Soanian threads.
Pakistanis are Irani (Aryan) people. Vedas originated on the Indus. Later you people called us Mlechhas (Puranas etc) because we (like original Aryans) worshipped different idols, ate beef, buried our dead, and had a nonrigid caste system.
Our culture is not only Islamic. Pre-Islamic customs (minus idolatry) are very much a fabric of Pakistani society.
Do you even know what Aryan (google is your friend) mean? I'll give you a hint, the name Aryan is from Vedas (otoh there are similar references in Proto Iranian languages, but the exact term is in Sanskrit). Your understanding is too skewed to know anything, rather all you do is, believe what your compatriot's blabber pretending they have the authority on what they speak.
Your culture is Islamic, do you guys do Japa and Brahmayajna (probably do not even know what those are). I'm not messing around your beliefs or wanting you to do Japa. Just pointing out that you are nothing but Islamic people. It's even hilarious when you call others (Indians) as cultural thief. You can't steal a culture, but you can steal a custom.
As for the Vedics, they consumed everything. From Boars/Pigs, Beef, goat, wild animals.
And they not just bury their dead, sorry. They burned their dead in funeral pyres, or given water burial, or just allowed to rot in the open air. We believe that the Human body is made of "Panchabhudas" (Air, water, earth, fire, and energy) Out of all these fire is considered pure and cleansing. Hence the preferred funerals were with fire. And not to mention their fascination for fire and sun. lastly, Vedics were not temple worshippers or did they gave importance to idols.
Please don't come up with simpleton points like they ate beef, we eat beef, they are monotheist so are we and connect imaginary dots that don't exist.