This is true, but it's worth taking a step up a meta level.
People who don't believe they deserve to have their boundaries respected also don't tend to do things that will garner them the power that enables them to do so.
The amount of power we have is not at all fixed. It can be changed by our choices and is meaningful mostly relative to the power of the people around us, and we also have a lot of choice around who those people are.
In short, people who want their boundaries respected tend to work to avoid getting into situations where they aren't able to enforce them.
People who don't believe they deserve to have their boundaries respected also don't tend to do things that will garner them the power that enables them to do so.
The amount of power we have is not at all fixed. It can be changed by our choices and is meaningful mostly relative to the power of the people around us, and we also have a lot of choice around who those people are.
In short, people who want their boundaries respected tend to work to avoid getting into situations where they aren't able to enforce them.