And when someone with a low post count comes along and starts posting great quality messages, people get suspicious. They'll start to wonder why this supposed newbie is posting more intricate responses than they are, and then they'll subconsciously jump to strange and improbable conclusions.

Or maybe that's just my reaction.

Given your weariness, it isn't unreasonable to do that...even if it is a tad bit xenophobic. An unfortunate side effect of our isolationist community.