The build in validation filters work the same way as the ones that you can add https://www.advancedcustomfields.com/resources/acf-validate_value/
If any filter fails then the field will not validate.
What you’re proposing would mean than if any validation passes to allow the validation, even if something else fails.
If you want you can submit this as a bug by opening up a new support ticket https://support.advancedcustomfields.com/new-ticket/
