Word count column in the posts list

<?php

add_filter(
	'manage_posts_columns',
	static function ( $columns, $post_type = 'post' ) {
		if ( 'post' === $post_type ) {
			$columns['snipfire_words'] = __( 'Words' );
		}
		return $columns;
	},
	10,
	2
);
add_action(
	'manage_posts_custom_column',
	static function ( $column, $post_id ) {
		if ( 'snipfire_words' === $column ) {
			$text = wp_strip_all_tags( strip_shortcodes( (string) get_post_field( 'post_content', $post_id ) ) );
			echo esc_html( number_format_i18n( str_word_count( $text ) ) );
		}
	},
	10,
	2
);