How is a commenter's potential conflict of interest not relevant?
At worse you could argue that the poster is biased, but then in this types of geopolitical discussions who isn't? Certainly not me.
Yet sometimes it leads to a better outcome than just analysis of the argument alone. Context is real. Context matters. Automatically disregarding real information on the grounds of "maturity" ideology can lead to a worse outcome, so it doesn't seem like the best course.