He's not entirely wrong, In fact you can trace the Pakistan-India conflict to even the pre-Islamic era if you consider the Aryan invasions/migrations. It's a civilizational conflict at its core.
Brahmin Hindus and wannabe Aryan North Indians wish to retake what they consider the original Aryan/Vedic lands of Pakistan and Kashmir. This is where their obsession with our land and fair skin stems from.
The problem with their thinking is, that the original 'Aryan' upper caste people who settled in the region, including Kashmiri Pandits, largely converted to Islam out of free will.
So now Indians have a severe identity crisis - a bunch of Bihari AASI (aboriginal DNA) North Indians whose ancestors were converted to Hinduism by Aryans at swordpoint, claiming that Pakistanis/Kashmiris are Muslim invaders who should be expelled from our lands. This is also the reason Indian Hindus project their caste insecurities onto Muslims, by claiming Arabs are original Muslims and everyone else is converted. Every accusation is usually a confession of some deep rooted complex.
Of course, this virtue signaling to expel invaders and restore Hinduism is a contracitory stance.
On an ethnic level, they (Indian Hindu) are unknowingly fighting to expel the original Hindus themselves -- the Aryans who settled in the Indus Valley and wrote the rigvedas thousands of years ago (see the Hindu Vedic scriptures, written in the Sapta Sindhava, almost entirely modern day Punjab PK, which decribe how Aryans slaughtered dark 'dasyu' Indian aboriginals en masse.)
Logically, to rectify this they would paint the conflict in a racial colour instead of religious -- something along the lines of 'the aboriginals are reclaiming the originally AASI land (Pakistan) the Aryans stole' -- but then, the carefully crafted Brahmin-British pan Hindu identity from the 19th century would collapse like a house of cards, because AASI Indians (aka non high castes, the vast majority of India) would realise their race is being used as cannon fodder to fullfil Aryan Brahmin's fantasies of invading their own ancestral homeland (where AASI were driven out of) to re-establish the Racist, Aryan supremacist, anti-AASI caste system that even locals of vedic lands themselves eventually rejected in favour of Islam's raceless Ummah concept.
So Indian nationalists cope with ridiculous theories like OIT which claims that tall blonde Aryans originated from India and invaded Europe, central Asia and Pakistan, while modern Indians are dark because the British forced them to work in the sun and breed with dirty low caste AASI aboriginal Indians (LMAO)
Also it was for this reason the Brahmins who originally shunned low castes suddenly decided in the 19th century to collude with the British to craft a pan-Hindu religious political identity in order to use what they perceived as subhuman lower caste Indians as useful idiots/cannon fodder against Muslims. The Brahmin Hindutva nationalists then manufactured the Hindu inferiority complex that exists to this day, by making up stories of how 400 gorillion 'Aryan Indian Hindus' were targeted and r#ped and killed by 'mleccha' Muslim invaders -- even though neither did a 'Hindu' political identity exist to be targeted, nor were Indians 'Aryan' to begin with. However it allows Brahmins to use a fabricated nationalist identity to delude AASI majority Indians into being riled up against Pakistan (or anyone who opposes Brahmin political power).
Brahmins would die to leave dirty low caste AASI India and live along who they see as their fellow Aryan brothers (non-Muslim Pakistan and Whites). This is why many North Indians are desparate to sem2sem with Pakistanis and Europeans, and they idolize Pakistani/European beauty standard. Of course they are unlikely to ever admit this, Indians love putting up a facade of false bravado to hide their internal shame. But if you observe their behaviour you can verify everything in this post yourself. These facts are already somewhat well known in diplomatic circles of half-relevant countries for years. Americans have publicly acknowleged this in officials' books and transcripts.
To sum it all up: They hate us cuz they aint us.
See how it all adds up?