Yes I believe freedom/slavery is a spectrum.
A man paying 100% taxes on his labor is a complete slave. A man paying 40% taxes on his labor is a partial slave.
People today generally can act, speak, and think more freely than people did 500 years ago. However, in general, richer people can speak, act, and think more freely than poorer people. Rich people have more power to do the things they want to do. They have the power to escape slavery more often than poor people.
Let’s use the most extreme cases as examples. Say you’re a multi billionaire. You want to drive your car and park it wherever you want. You also don’t feel like carrying insurance or a drivers license. You can literally drive your car, park it on a firelane, get a ticket, and then pay it off. The fine is insignificant to you. Even if they towed your car, paying to get it back is insignificant. If anything, you can just buy another car. You are not restricted by these things the way poor people are.