[AlexRayan]

@tapirk Alternatively, you can also put this function with the filter into your theme’s functions.php file in case you don’t want to create a plugin.

[AlexRayan]

To whomever wonders how to switch the order of replies. This filter actually works well, just the code needs to be modified to change the array value in $query[‘order’].

function bbp_reverse_reply_order( $query = array() ) {
    $query['order']='DESC';
    return $query;
}
add_fiter('bbp_has_replies_query','bbp_reverse_reply_order');

Hope, it helps someone.

Regards,
Alex