One possible reason could be spreading false information. If the person in charge of online post stories is found to be sharing untrue content, it can damage the credibility of the platform, so they get fired. Another reason might be violating the platform's ethical guidelines, like promoting hate speech or discriminatory ideas.
There are several factors that can lead to a person being fired from online post stories. For instance, not adhering to the content strategy set by the company. If the company aims for a certain type of content to be promoted, say positive and inspiring stories, but the person keeps posting negative or controversial content that goes against the brand image. Additionally, if they are involved in some sort of data manipulation regarding the post stories' analytics, like inflating the number of views artificially, this would also be a cause for dismissal.