I have had some experiences with ill-behaving companies. Where bosses think that employees need to be in fear so they are more productive. Where people is told to "never make a mistake" or they will be fired. You get the picture. People is depressed. You see people actually crying at their job.
I have also worked for functioning companies. People is valued and get positive feedback on their job. Mistakes are investigated to get an understanding and improve the processes to help people but personal blaming is forbidden. Where the manager´s job is to help employees to achieve their potential and support them.
In the first situation people is depressed and unhappy. People is paranoic and don´t trust each other. A blaming culture rewards lying about the status of projects and their results.
In the second situation people is more happy at work. Meetings are constructive and ways of improving the company are found. People find themselves realized at work.
Social media is just a mirror of society. It magnifies its uglyness or its greatness. I love to get into social media and see nature pictures from one friend. Another one composes music and shares it on-line. Most people will react joining into a good joke and answering with some one has a practical question. I love to be on social media, but I can understand how different that experience will be for others. Like the two companies I described, the same personal circunstances can be seen as gloomy or fantastic by the influence of your environment.
Social media can, and maybe should be regulated, but the only solution to the problem is better education that values the indivual while encourage to work for the better of all society. And then society is going to be able to look at the mirror and like the image that is sees.