I don't know who this Sinha chap is, but I think that tweet is sarcasm directed at Muslims who claim that they are pasmandas, or Hindus who support that claim. He is obviously trying to say that Siraj being in the Indian team negates all accusations of India being communal and anti-Muslim.
I know that tweet is borderline chutyapa. The win was a happy occasion and there was no need for point scoring. But I don't think it was targeted at Siraj personally.
It was targeted at Siraj directly. There is no sarcasm here
That Sinha guy is a right wing hindu troll with a very good following on social media