Among the current legislators who do not have accounts on OpenSecrets.org., how many of them do not have instagram accounts either?
do not have accounts on OpenSecrets.org refers to opensecrets_ID is NULL OR opensecrets_id = ''; do not have instagram accounts refers to instagram is null
SELECT SUM(CASE WHEN T1.instagram IS NULL THEN 1 ELSE 0 END) AS count FROM `social-media` AS T1 INNER JOIN current AS T2 ON T1.bioguide = T2.bioguide_id WHERE T2.opensecrets_id IS NULL OR T2.opensecrets_id = ''