He's so cunning that he couldn't lift that curse for 30
You're making the assumption that Lara could have, and I don't agree.
after his daughter found out about it, he was cunning enough to be overthrown by her and live for years as her pawn.
Nonsense. Lara didn't overthrow anyone. Harry exposed him as not being able to feed. Harry caused him to use up all his reserves to heal himself, leaving him helpless. Lara walked in and finished him off. Dresden did the work, not Lara
Lara is straight up smarter than her father, she's not quite as ruthless. But since she's been in charge, Casa Raith has been upgraded with military weapons, competent guards and magical defenses. She's also expanded the WC's power into mortal politics. She's done all this while also keeping her father under her thumb.
The White Court was a major power that was expanding under Lord Raith. It was only after he could no longer feed that he started going crazy, and caused the White Court to stagnate. Lara is only taking over where her father left off.
WoJ:
"How old is Lord Raith?
He’s a couple thousand years old. He’s got 2 thousand years of paranoia kinda built up. Plus he’s been absolutely bonkers the past 30 years or so.
There’s kind of a long game going on in the Dresden Files, and Lord Raith has been involved in it in the last couple of cycle’s it’s gone on. He’s been trying to educate himself about it, and he meant to be a player in it this time it came around, but getting involved with Margret kind of screwed him over."
Lord Raith ruled, and everyone feared him, and didn't dare challenge him. Lara has only been in charge for a few years and the powers are already planning on overthrowing her. If she had the brains, or power, none would challenge her. That is about to change.
WoJ:
"everyone has to pretend that Lord Raith is the one in charge even though they know better. Until it comes time to unseat Lara, and they’ll have to take Raith out of his position in order to get Lara out of hers. "