I think this is an example of developers taking questions quite literally: You don't need to become a manager, but many (myself included) would admit that it does help.
You also might want to take into account the age and seniority of most developers on the platform - for someone with <10 years of experience, it's likely that you absolutely have an avenue to make more money without becoming a manager.
That is fair. For many of the young developers who responded to the survey, they probably have a ways to go before they start hitting compensation walls.
You also might want to take into account the age and seniority of most developers on the platform - for someone with <10 years of experience, it's likely that you absolutely have an avenue to make more money without becoming a manager.