Maybe.
I would just think we'd have seen him. "I'm so proud of my daughter and I think she'd be a great president. " The most regular ass statement would do. I don't expect him to flesh out her policy or anything.
But it seems like this guy is either hiding or being hidden.
He's his own man, a well-known, respected lifelong professor who once held powerful positions of influence in Jamaica's government. No one is "hiding" him lol.
He's a Marxist economist and his relationship with his daughter hasn't been great in adulthood, so my guess is that he thinks his daughter is a mainstream sellout and he wouldn't honestly support her policies. But she's his daughter, and she's obviously better than the alternative, so he doesn't want to sabotage her either. He also likely knows that anything he says, positive or negative, will be used disingenuously by her racist and anti-Marxist opponents, while anything he does say as a Black Marxist isn't going to help her in any meaningful way. So he chooses to say nothing and thus not compromise his values nor her chances at winning as well as keeping himself out of the whole drama.