Sure! You cannot blame them but the funniest part is if you tell them from experience, they end up thinking you are insane or you have no idea what you are talking about. I feel the best is to always allow them to fall for such news so that they can end up learning from their mistakes for the future. I can imagine the huge smile, laugh, and party going on among the whalers right now.
I didn't react to the rumour mill (not by selling anything, anyway) and I'm sure the majority of actual holders didn't as well. At the same time, this latter behaviour (of yesterday, not the weekend) does seem like some people are learning their lessons from 2013 and 2014.
I'm pretty sure whales would have at least diversified out a small portion of their coins. In fact, it's a natural hedging strategy. There would also have been those whose stop losses simply triggered at $3990 or lower, when they bought at low $4,000s as the uptrend did not happen. That would help explain the shedding in exchanges other than in South Korea (Bithumb).