Is the Internet watchdog, factually.co, a trustworthy, reliable source of politically and ideologically independent research and reporting about people and events which are controversial? How corrupted might it be by the interlopers?

This platform and those who work on it are doing so in earnest with honest intentions, wanting to provide as authoritative an analysis as possible. That, of course, does not mean it will be successful. Almost everyone is intending to do good work that is useful and reflects reality. The problem of bias is ever-present, and because humanity has been manipulated all through its history, it is a kind of folly to assume on the part of any human being they can be objective and discerning and put into accurate perspective anything and everything they look into and need to explain to others as a fount of wisdom. But, as far as it goes, this is as reasonable a summation as you might find, given everyone asked about any particular question will have differing thoughts, feelings, and beliefs, based on their own collective knowledge base and personal history, not to mention the degree of corruption from being present within human culture, which is inevitable and must be kept in mind always.