It may be that software development is less gatekeeped than other white collar jobs. No degree, no certification to get started. Thus seen as "lazy". Paid for sitting on your ass.
Or it may just be the high school mentality carried over into adulthood. In other words envy. The "dorks" are supposed to stay miserable. Not do what they like and earn good money from it.
No surprise it's seen different from being a founder or a manager. Our culture respects these occupations more. They may be in "tech" but they are for sure not the "lazy dorks" the developers are.