The framing of VCs / board versus founders / shareholders doesn't make sense to me because so many startups have founders controlling the board. And VCs are shareholders too, of course.
I think what you may be referring to is that the Delaware courts generally give the company management broad discretion over business decisions. So it's difficult for a random shareholder to successfully sue the company over some bad decision they made. But as a founder, that's what you want, so you can run your startup without having to worry about backseat drivers.