No it's not. It's "definitionally" income that's passive, i.e. you're not actively doing anything for it (any more). In other words, you can put a some or a lot of work in advance and then receive income over time, passively. A short list of examples:

• royalties from intellectual property, like books, music, acting, patents etc.
• automated business, where it's developed to the point that requires almost no input
• ad revenue from online content, like websites, blogs, vlogs etc

As a software dev I know what it entails. It can be your job AND your passive income.