I don’t think he ever was an activist in the Tony Orian sense of the word (he was exiled with his father, and he has 4 kids). He has been “active” over the past couple of years, mostly in the Souh (doing an on the ground campaign). In Beirut, I would say he is mostly aligned with the themes of the Hirak Madani, but with a forward looking view to build small wins, focusing on social issues.
I genuinely think he hopes to make a difference. He moved his family back to Lebanon and believes he needs to fight to give them a better life.
His dad is not running, as far as I know, so my opinion of him is irrelevant. And per what he said, he doesn’t always sees eye to eye with his dad.