What's the point of a $3000 contract review if the employer's response will be "Not changing it, sign or walk."
I certainly know of people who have suggested and gotten changes to agreements like this. But you need to be professional about it.
"Poor culture fit".
It's like asking what the best way to write a lisp in INTERCAL would be. The best way is to not do it.
A lot more things are open to negotiation than some people imagine. Even including buying a fridge at your local chain store or similar. Not every time, and not to everyone who merely says "I want".
But who would pay $3K for a contract review??
Special cases are special. But most cases are not special.