Firstly, that isn't true. Huge numbers of people learn to write code as part of a degree that isn't CS - for example, if you want someone to develop a GIS startup you'd be better off with a geography graduate who can write decent code than a CS graduate who probably doesn't have experience of GIS.

Secondly, if you hear "startup" and think "developers" then you're ignoring at least 50% of the work necessary to make the business a success, all of which can (and often should) be done by someone without a CS degree. There's a lot more to tech than writing code.