BULLSHYT!
Sindh was a Buddist Country.
It was called Tentouk by the Koreans.. and Sindhu in the region..
https://defence.pk/pdf/threads/with-peace-message-dr-gilsu-calls-himself-modern-hyecho.585822/
Ironically 80-90% hindus in sindh are marwari,gujrati dalits who settled in Sindh as pastoral shepherds,farm hands etc of local land owners!
Even today the Sindhi Hindu is urban middle and upper class !
Why? Because most Sindhi hindus are traders and brahmins by caste with a sprinkling of rajputs in border areas like MPA/former Minister Rana Chandar Singh and his family of Umarkot..
Issues with his brother or not... he and his family was a curse for Sindh.