You’re saying that just asking will cause them to pull the offer. That would be bizarre behavior. If that’s accurate, do you want to work for them? You don’t. A

You’re saying that just asking will cause them to pull the offer. That would be bizarre behavior. If that’s accurate, do you want to work for them? You don’t. And you don’t have to. My first proper job after being a freelancer I felt it had an overly broad clause about ownership of work done in my private time. When I asked, they clarified, and I told them directly, that makes sense, but that’s not what’s written. They just changed it for me! No problem! It was no Amazon but a large company in my book. If (with the help of a lawyer) it isn’t clarified to your liking, do not work for them. No is good.