This kind of behaviour is standard for Slashdot. IMO tt has actually little to do with the Amiga per se. The same happened with BeOS stories when Be Inc still was alive and kicking. The people shouting at Slashdot in replies isn't the silent majority which actually likes to read about Amiga. The more shouting is more an indicator of that many (for whatever reason) see Amiga as a potential competitor.
IMO it is best to either ignore the comments or write clarifications or your own opinions in reply. :-)