A good counterexample, showing the benefits of live streaming, is the continuing protests in Hong Kong. Many of the local media organisations have been streaming their coverage of the protests (primarily via their Facebook pages). At times some of these streams have had more than 10,000 viewers watching! Increased transparency must surely be a net positive, especially in a situation where the HK police are accused of assaulting journalists and non-violent protesters.
Technology itself is rarely good or evil.
On the subject of the HK protests, there is a nifty little tool that automatically tracks the various live streams (they only tend to start up when a protest is happening) and can show multiple streams on the same page: http://ncehk2019.github.io/nce-live/