Yes, on some social media platforms, people can see that you have viewed their story. For example, on Instagram, if you watch someone's story, they can see your username among the list of viewers.
Well, it depends on the platform. Snapchat also allows users to see who has viewed their story. However, not all platforms are the same. Some might offer privacy settings that can prevent others from seeing that you've watched their story. If you're concerned about privacy, it's a good idea to check the privacy options of the specific app you're using.
On most popular social media platforms like Instagram and Snapchat, the answer is generally yes. But there are exceptions or workarounds. For instance, on Instagram, if the story has a large number of views, the person may not notice that you specifically have watched it. Also, some platforms might be working on changing their privacy policies regarding story views in the future, so it's always good to stay updated.