“Please don't post insinuations about astroturfing, shilling, bots, brigading, foreign agents and the like. It degrades discussion and is usually mistaken. If you're worried about abuse, email hn@ycombinator.com and we'll look at the data.”

Sometimes people lurk because they know they’re going to be scrutinised by self appointed gatekeepers and so try and wait until they have something perfect. Only to later just jump in the pool with something simple.

Your either is not complete, there are plenty of other possibilities.