The Events Calendar: Override TEC's own JS override of Month view's iCal export (forcing Month export) -- so we can ACTUALLY use the https://gist.github.com/cliffordp/ab1f7c4d95723ee6f892 snippet

functions.php

<?php

/**
	* From https://gist.github.com/cliffordp/1d39d2f51b82c0077212472d498873dd
	* 
	* The Events Calendar: Override TEC's own JS override of Month view's iCal export (forcing Month export) -- so we can ACTUALLY use the https://gist.github.com/cliffordp/ab1f7c4d95723ee6f892 snippet
	*
	* Updated 2016-09-13 to not overwrite iCal Export links on Single Event view (and potentially elsewhere)
	*/
function cliff_tec_month_ical_year_link_strong_override() {
	if ( ! class_exists( 'Tribe__Events__Main' ) ) {
		return false;
	}
	
	$tecmain = Tribe__Events__Main::instance();
		
	// https://developer.wordpress.org/reference/functions/is_post_type_archive/
	if ( ! is_post_type_archive( $tecmain::POSTTYPE ) ) {
		return false;
	}
	
	wp_enqueue_script( 'jquery' );
	
	?>
	<script type="text/javascript">
		jQuery(document).ready( function () {
			jQuery( 'a.tribe-events-ical.tribe-events-button' ).attr( 'href', '/events/?ical=1&year-feed' );
		});
	</script>
	<?php
}
add_action( 'wp_head', 'cliff_tec_month_ical_year_link_strong_override' );