There is actually a positive aspect regarding the impostor syndrome, which is a motivational drive to become better in order to get rid of this negative feeling.
I know few programmers who are real impostors and who works for way too much money, just because they can sell better the two or three things they know. They should be infected with a mutated form of the impostor syndrome.
But these impostors are only the exception. Most programmers works hard for their money and their skills are exceptional. Really, if you think about what a programmer needs to know today, its overwhelming. Try to write down your skills, your projects you worked at and see how many pages it will fill. Its a very demanding job and not easy to keep the pace with.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.