Paste as plain text

Hello,
An average user never care about the “past as plain text” option, so I want to force this behavior on the frontend. There are some plugins and functions:

function tinymce_paste_as_text( $init ) {
$init[‘paste_as_text’] = true;
return $init;
}
add_filter(‘tiny_mce_before_init’, ‘tinymce_paste_as_text’);

and this works for the backend, but the wpuf frontend with tiny rich text editor pastes all the styles.

Any help, maybe I need to use an other filter, or write something to the frontend-form.js

????

Thanks

https://www.ads-software.com/plugins/wp-user-frontend/