No matter who pulled the trigger, Pakistan was involved. Why deny it?
As for 1973, the Arabs lost just like they lost every war with Israel. Pakistan's involvement did not change that.
As for India not criticizing Israel, it can be explained by the changing geopolitics. India, under Congress rule, supported the Palestinians, including not even recognizing Israel (which happened under Modi). At the time, the Palestinians were led by secular, Marxist groups like the PLO and PFLP. Today, things have changed significantly. Hamas is in charge, and Congress has given way to Modi and the BJP. Why would India support an organization like Hams, which not even Arabs like?
Personally, I don't care about Israelis or Palestinians. I have no stake in this conflct.