Are photos, videos and other digital contents haram?

Okay, before jummah prayer in one of my local mosque, the khatib said all of us to avoid mobile and internet. He said that internet did more harm to Islam than it did any good. He also discouraged promoting Islam online and criticised the scholar who spread Islamic knowledge over internet. He mentioned that photos, videos are totally haram. Even talking over video call is haram too. He requested us too abandon our mobile in order to stay safe from internet. Now my question is, how logical is that? Are everything he said true? Is internet actually no use of Islam?