Move the comment text field to the bottom

move-comment-field-to-bottom.php

<?php
/**
 * Move the comment text field to the bottom.
 *
 * @see 	https://developer.wordpress.org/reference/hooks/comment_form_fields/
 * @param  	array  $fields 		The comment fields.
 * @return 	array
 */
function prefix_move_comment_field_to_bottom( $fields ) {
	$comment_field = $fields['comment'];
	unset( $fields['comment'] );
	$fields['comment'] = $comment_field;

	return $fields;
}
add_filter( 'comment_form_fields', 'prefix_move_comment_field_to_bottom' );