The Events Calendar : Strip shortcodes from the post content in the iCal export.

ical-strip-shortcodes.php

<?php
/**
 * Description:  This snippet will try to strip the shortcodes from the post content 
 *               in the iCal export feed.
 *
 * Usage:        Copy the snippet into your child theme's functions.php file.
 *
 * Plugins:      The Events Calendar
 * Author:       Andras Guseo
 * Last updated: November 4, 2020
 */

add_filter( 'tribe_ical_feed_item', 'tribe_change_content_to_excerpt_in_ical', 10, 2 );

function tribe_change_content_to_excerpt_in_ical( $item, $event_post ) {
	$content = preg_replace( '/(\[.*?\])/', '', $event_post->post_content );
	$item['DESCRIPTION'] = "DESCRIPTION:" . $content;
	return $item;
}