Several social media companies are being blamed for the proliferation of fake news. It is because their platforms allow fast and easy sharing without requiring verification from third parties, such as journalism businesses or other authorities.
The issue of social norms also needs to be addressed: today, people are able to engage privately with content without repercussions, so they feel free to spread things, even if those things seem untrue at first glance. Due to the lack of accountability on these networks, misinformation spreads like wildfire!
Today, social media users make over 2 billion posts each day, so it is natural that misinformation will grow with time; especially when considering how easy it is nowadays just about anyone can post anything false or biased online without fear since anonymity seems more important than accountability.