Edit TSF title branding

title-branding.php

<?php
// Don't include the PHP tag in existing files.

// Requester: https://wordpress.org/support/topic/filter-to-remove-blogname-from-all-posts-or-other-post-type/

// Where do I place filters? See: https://tsf.fyi/docs/filters#where

/**
 * Adjust The SEO Framework title branding.
 *
 * @param bool       $use  Whether branding is set.
 * @param array|null $args The query arguments. Accepts 'id' and 'taxonomy'.
 *                         Leave null to autodetermine query.
 * @return bool True when additions are allowed.
 */
add_filter( 'the_seo_framework_use_title_branding', function( $use, $args ) {

	if ( null === $args ) {
		// We're in the main query...

		// Unset for all non-page-type queries.
		if ( is_singular() ) {
			// Singular query...
			if ( ! is_page() ) {
				$use = false;
			}
		} else {
			// Term query...
		}
	} else {
		// We're somewhere on the admin pages or generating structured data.

		if ( $args['taxonomy'] ) {
			// Term query...
		} else {
			if ( ! $args['id'] ) {
				// Unknown page. May be home-as-blog page...
			} else {
				// Get the post object.
				$post = get_post( $args['id'] );

				// Check if the Post object exists...
				if ( $post instanceof \WP_Post ) {
					if ( 'page' !== $post->post_type ) {
						$use = false;
					}
				}
			}
		}
	}

	return $use;
}, 10, 2 );