FUD news and FOMO has normally been the tools used by the big whales in upsetting the market. For us that have been around for some appreciable time we know about this and doesn't see any bitcoin dip as anything disturbing anymore because we all know and understand the endgame... and that's that bitcoin price will rise again after all the fuss.
But what I don't fall in with you OP, is your claims, in your last paragraph. You should have evidence to backup your claims to make them more rational.
I think we all can pass OP is judgement since he said it was what he thinks, so let’s say his thinking isn’t backed up by any logical stats or evidence as such a false claim for now.
In general just as you have rightfully said the bitcoin market has actually been looking like a something that is manipulated because news either negative or positive have actually been affecting the market, what I will say is the market is mostly affected by sentimental analysis which I think those institutions looking to accumulate more bitcoin actually take advantage of. But do Dey really manipulate the market or are aware of the manipulation? I will say No, because if they truly are aware they wouldn’t be buying at every price they do even at the top, the u predictability of the market has force even larger institutions to simply DCA