City AM's target market is workers in 'the City', i.e. the heart of the London financial markets. So a lot of well informed intelligent readers with the ability to spot and reject made-up nonsense.
That's reflected in the specific article cited. It's very clearly reporting on speculation and rumours being shared elsewhere without pretending that there's any solid evidence or that readers should believe the rumours.
If you're trading on international markets, managing funds, providing financial advice and guidance to multinational businesses, you want to know about those rumours - true or not they represent a source of risk that needs to be considered, priced into deals, mitigated and managed as part of business.
So I think the story is a good one, but primarily it's drawing attention to the potential for a coup in Russia to people that lack the off-mainstream information sources providing so much value in this thread.