These snippets are examples of how you can modify the Yoast SEO breadcrumb visual output. These snippets will not alter the breadcrumb schema output. Please consult the schema documentation to change the breadcrumb schema: https://developer.yoast.com/features/schema/api#to-add-or-remove-graph-pieces

yoast_seo_breadcrumb_remove_link.php

<?php
/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/

/*
 * Remove a link from the Yoast SEO breadcrumbs
 * Credit: https://timersys.com/remove-link-yoast-breadcrumbs/
 * Last Tested: Mar 12 2017 using Yoast SEO 4.4 on WordPress 4.7.3
 */

add_filter( 'wpseo_breadcrumb_single_link' ,'wpseo_remove_breadcrumb_link', 10 ,2);

function wpseo_remove_breadcrumb_link( $link_output , $link ){
    $text_to_remove = 'Products';
  
    if( $link['text'] == $text_to_remove ) {
      $link_output = '';
    }
 
    return $link_output;
}

yoast_seo_breadcrumb_remove_postname.php

<?php
/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/

/*
 * Remove the last breadcrumb, the post name, from the Yoast SEO breadcrumbs
 * Previous breadcrumb link will become text
 * Credit: Jason @ http://thejasonjones.com/wordpress-seo-breadcrumbs-tweaks/
 * Last Tested: Jun 11 2018 using Yoast SEO 7.6.1 on WordPress 4.9.6
 */

add_filter( 'wpseo_breadcrumb_links', 'wpseo_breadcrumb_remove_postname' );
function wpseo_breadcrumb_remove_postname( $links ) {
	if( sizeof($links) > 1 ){
		array_pop($links);
	}
	return $links;
}

yoast_seo_breadcrumb_remove_title_only.php

<?php
/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/

/*
 * Remove the last breadcrumb, the post title, from the Yoast SEO breadcrumbs
 * Previous breadcrumb will remain linked
 * Credit: David @ https://generatepress.com/forums/topic/how-to-hide-the-title-part-in-the-breadcrumb-im-using-yoast-seo/#post-614239
 * Last Tested: Apr 11 2020 using Yoast SEO 13.4.1 on WordPress 5.4
 */

add_filter('wpseo_breadcrumb_single_link', 'remove_breadcrumb_title' );
function remove_breadcrumb_title( $link_output) {
	if(strpos( $link_output, 'breadcrumb_last' ) !== false ) {
		$link_output = '';
	}
   	return $link_output;
}

Hello,

thank you very much for these snippets.

But "$text_to_remove" does not work for text with an "&" in it.
I tried it with (all without blanks, of course):

• &
• & amp ;
• & #x26 ;
• & #38 ;

If anyone needs an example of appending text to both a parent breadcrumb and a child breadcrumb, here's the gist and an accompanying tutorial.