Receiving $username$ Wants To Share Email Requests for Owners

When an Owner of my sharepoint site tries to share the site, it emails all the Owners for approval (see example email below). This appears to be redundant, since Owners already have permissions to share.

What am I missing here? Why does it ask Owners to Accept sharing, when an Owner is the one performing the sharing action?

Example "wants to share" email seeking approval: