Of course. Yet there are obvious correlations to certain topics, and there might be a connection between the "how people discuss it" and the capacity to take a week off from it once in a while.
Also, are you really taking the correlation route in the pseudo-intellectual argument for why there is a ban?
Because if we are just going by correlation: Any time security or privacy is a topic, people stop reading anything and just start speaking from The Heart (just look at the Google Trusted Contacts thread where a significant chunk of the posters have no idea what the app even is...). So clearly that topic should be banned too, right? I mean, there is a clear and obvious correlation between topics about security and privacy and people having emotional discussions. So ban it
In all seriousness: It is your product and you do with it as you see fit. Just understand that people used to love Google and Facebook until they decided (rightly or wrongly) that they were just a commodity and that they were giving their personal information and opinions to an entity that had no problems doing experiments to figure out how to better target them. And with crap like this, it won't take long for people to realize that the company built around knowing what tech to invest in may have an ulterior motive for hosting a board for Cutting Edge Tech (TM) and may be using the data for less than kosher reasons. And crap like this is a good way to trigger a burst of thought from people.
Since dang sees all the user flags he probably has a better idea of which discussions get flagged -- which discussions trigger heated arguments.
Would you expand on this? What ulterior motives do you have in mind? What do you think HN is using the data for? Most of the data is available through the API, so pretty much anyone can use the data for whatever purpose they'd like.