As this article was being published, one of the livestreams was removed by YouTube, so it appears that the company is aware of the issue. However, many fake SpaceX solar eclipse livestreams remain. It's unclear just how many users have fallen for these streams, but it appears they have...
Watch live: NASA TV is broadcasting video of the total solar eclipse onlineDave Mosher
The best live video feeds streaming the 2017 total solar eclipseDave Mosher