The state-owned taunt is a racist trope. It basically suggests that Sheikh Mansour can't have his own personal wealth and invest his own money how he likes. It is essentially saying of Arabs: "They are all the same." The ownership structure of City is clear and proven but some people choose to ignore it. Do these critics believe that all the investments Sheikh Mansour has made in property, finance, tech, renewable energy, means that these UK sectors are all "owned by Abu Dhabi." It is a dehumanising and racist narrative which needs calling out.