How important to require users to put details on About Us?

I am creating this application where business users can have a vendor page by providing details ex. services, prices, this happens only after these vendors signed up as an onboarding process. I also have this area where they can input "About Us" information, I want them to onboard right away by providing only some details that are really critical to their services like Prices and Type of Services. This application also has customers profile where they are the one who can interact with vendors to get the product or the service the user needs. I am not sure if it can affect us, the platform provider for both customers and businesses. Do I need to require these vendors or just optional having the About Us details?

Example below: Facebook having this information as optional.