@kingstakh,

Yes, I understood what you meant. We're really sorry, but there is no option to disable the inline commenting form for none logged in users.  

There is some workaround you can use. You can hide inline commenting form via CSS code for not logged-in users. Below is provided a CSS code you can use. 

body:not(.logged-in) .wpd-inline-shortcode .wpd-inline-icon-wrapper .wpd-inline-form-wrapper{
    display: none !important; 
}

Put the code in the Top Admin Bar > Customize > Additional CSS > "Additional CSS" textarea, save it, delete all caches and check again. 

Please don't forget to press Ctrl+F5 (twice) on the frontend before checking.