I once dated a convert whose mother was not Jewish and father was an OTD Syrian. His father’s family rejected him, so much so that when he was born, his grandfather said to his father, “What a shame that we can only love half this child.” (When he grew up and became a frum Jew, their attitude didn’t change.)
Frum converts in general already have to deal with outright suspicion and marginalization, which I believe is a real tragedy, but it’s ten times worse in the Syrian community. I don’t know why.