If it wasn't time consuming they'd have already done it, if it was an effective usage of time above what they're dealing with now, they'd have already done it. They likely also realise that even if they refute everything from a FUDster they will just cook up more, why does it matter if a FUD company set up overnight "appears stupid"? It doesn't, they've effectively wasted the companies time and they can just create another account / domain / identity and start again with similar worded, but essentially the same old FUD.