That's not really true.
When this happens is mostly because the respondent (in this case: Me) is not reading a post accurately. Which is just stupid and completely my fault.
Or it happens because the unknown posts something without punctuation, capitals and basic grammar which makes it unreadable for those that don't have English as their native language (for example: Me).
Or it happens because the unknown poster has been posting in the Forbidden Fora a lot recently which makes everybody in here suspicious generally speaking.
Lastly, it seems that a lot of (relative) newbies seem to take pleasure in flaming newerbies to get recognition or respect from established LLaMa's. Which they won't get that way, I would imagine.