bp_activity_can_comment()

function bp_activity_can_comment() {
	global $activities_template;
	$bp = buddypress();

	// Determine ability to comment based on activity type name.
	$activity_type = bp_get_activity_type();

	// Get the 'comment-reply' support for the current activity type.
	$can_comment = bp_activity_type_supports( $activity_type, 'comment-reply' );

	// Neutralize activity_comment.
	if ( 'activity_comment' === $activity_type ) {
		$can_comment = false;
	}

	/**
	 * Filters whether a comment can be made on an activity item.
	 *
	 * @since BuddyPress 1.5.0
	 * @since BuddyPress 2.5.0 Use $activity_type instead of $activity_name for the second parameter.
	 *
	 * @param bool   $can_comment     Status on if activity can be commented on.
	 * @param string $activity_type   Current activity type being checked on.
	 */
	return apply_filters( 'bp_activity_can_comment', $can_comment, $activity_type );
}