*** "Actually, I don't see any reason to be so upset. " (LyubovL @ DosDawg) ***

If you tell someone that what he "posted there is absolutely wrong and doesn't have anything to do with the facts", you can expect people to be upset, especially if you aren't categorically 100% right (as the case here is). Basically the (public) message you send to DosDawg is that "you don't have a clue about this". This is particularly troublesome in situations where the person who's see more being put down feels they are more privy to certain technical information and skills than yourself.

In general, if you condemn something someone says as "absolutely wrong", you can expect to have a backlash. Nobody wants to feel attacked upon, and especially not a customer on a company website, and especially not coming from a company representative.

Knowing how to "soften out" conflict situations, rather than escalating them, is a basic customer relations management skill. If you don't see how your post might cause that, then may I suggest that you read it over several times, and together with someone else if nothing else helps, until you understand why it might cause offense in someone.

If you overlook and neglect this, you are effectively shooting yourself and your employer in the foot. This has everything to do with facts and is absolutely right, and please feel free to copy this series of exchanges to a third party of your choice for evaluation and feedback.