In*Internet slang, a*troll*is someone who posts inflammatory,[2]extraneous, or*off-topicmessages in an online community, such as an online discussion forum, chat room, or blog, with the primary intent of provoking readers into an*emotional*response[3]*or of otherwise disrupting normal on-topic discussion
The topic is who is getting one, responding that the price will drop or that you are cancelling your pre orders, I think, fits the bill close enough! Why else post those responses to a topic asking who is getting one and with the intent of drumming up excitement, rather than pessimism, on the topic.