She uses the time effectively, imho. Though it could have been an actual essay, I think the format suits the content quite well. (It's commenting social media on a social media platform, which I think is relatively justifiable not only through audience overlap - people willing to watch an hour long video on social media beef are going to be invested in social media - and given that Sarah Z does not have a platform in legacy media and couldn't reach audiences in similar way through other media.)