What is the ruling on sending da‘wah (proselytizing) clips and dedicating du‘a (supplication) for those who disseminate them, and what is the ruling on one who does so for the purpose of fame or to respond to those who deem his action wrong?

Publishing da'wah clips with good and reliable content is a righteous deed that falls under the virtues of spreading knowledge and guiding people to good. It is good to supplicate specifically for the one who publishes the clip. As for mocking and ridiculing those who publish da'wah clips and accusing them of seeking fame, it is a reprehensible act that involves accusing people and harboring ill thoughts about them without justification.