Global setting to block email domains on ALL forms

A feature like this is long overdue. We spend over an hour every time we add a new domain to block all the forms.
I love HubSpot for everything it does and its new features—HubSpot advocates for content, content, content, and efficiency. As you add new content, you end up with an equal number of new forms. You also get many new visitors using fake domains and email addresses that prevent you from contacting them.
There has to be a relatively easy way to create a parent/child relationship in all forms, such as the one attached.