No—if you share a board, visitors to the board link will see all the files and sub-boards contained within it. You don’t need to create individual links for each asset.
A board share link is scoped to the board or sub-board it was created for, including the visible files and sub-boards inside it. You can also consider using quick share links for sharing multiple items across different locations in your workspace.
Asset share links target either Current or a selected numbered version (V#). Quick Share Links are separate links for ad-hoc selections of multiple items. Both are independent from the board link.
A Current asset link follows the asset’s current version as versions are added, while a V# link remains fixed to the selected numbered version. Users can keep a Current link and selected V# links enabled at the same time.
For sharing with your internal teammates / library members, skip the share link creation step altogether. Send or hyperlink them to your browser window URL to share with ease. No need to create a public link for people who have a login to your workspace and access to the content you want to share.