It's not just about answering the questions. It's also about answering them in a legal-safe way that won't put you in more trouble than not answering them at all. And any small variation in the questions can require someone with legal experience just checking this, which costs money.

To add to a sibling comment, Google can afford a big enough legal department for estimated 0.00000x% of their turnover that deals exclusively with these.

For smaller organizations, this becomes more like 0.x% of turnover...

Not to mention the distraction and plain overhead when you're juggling so many other things.