Before joining, I had read through this thread, it made me concerned. How do you know who is an impostor? Is it just that feeling, a sort of ESP, or do you see some sort of giveaway in the post.
My take on a rude, contentious or argumentative post is the same as in life. Ignore it, you can't start an argument in an empty room. Though I know a few people that could give it a good go.
Another Tired Kicking For The Sick And Disabled By Rishi
What is a reasonable minimum spend for an online grocery delivery??