So where to consider a buy now? We're still in a strong bull trend, but in retrace / consolidation mode, so I'm looking for confluences of support. The 4000-4050 area looks nice, because many different types of support align there.
You could say ANY trade is 'just an auction taking place'... of course it is.
What this trade shows, and what the author is trying to say is how easy manipulation of the market is for someone with that much bitcoin. This case is a strong example of that, whether it's actually 'manipulation' or not.