Why are Techies so delusional?

There has been a huge influx of posts dissing roles like Product, Marketing, HR etc. by Techies.

Every other post, or comment is made by them undermining the value of other depts and these cuties think business runs just by their sub-par code.

I understand that their delusion stems from the fact they get paid huge salaries by loss making companies. Which is bound to crash sooner or later.

Rant over.