Pakistan may have come to existence in 1947, but Tipu Sultan's family did originally come from the Punjab, he spoke Urdu, and he was a Muslim. No reason for us to not like him.
But I don't see why (Kafir) Indians like him. He fought against the Marathas and wasn't exactly nice to you guys:
Ripaud de Montaudevert, a French soldier who fought for Tipu, in his diary entry of January 14 1799 writes: "I'm disturbed by Tipu Sultan's treatment of these most gentle souls, the Hindus. During the siege of Mangalore, Tipu's soldiers daily exposed the heads of many innocent Brahmins within sight from the fort for the Zamorin and his
Hindu followers to see."
https://www.outlookindia.com/magazine/story/the-tyrant-diaries/284803
It is to be expected that someone like you would oppose the actions of someone whom without, Pakistan would never exist.
Muhammad Bin Qasim is to Pakistan what Christopher Columbus is to America. Neither were from the land, but both are the reason these respective nations exist today.