This is how whales operate. First they tell you "it's a scam", then they say they regret saying so. That's exactly what Jamie Dimon did. They create dips thanks to their power in the media, then they buy the dip, then they buy tip, then they create FUD again, short it, then buy it at a higher floor than before.. and this is how they accumulate.
Ok let me ask you this then, if he's just starting a fund to actually BUY bitcoin, why is he telling that in the media? That would cause the price to rise (like it did over the weekend) so he has has to buy at higher prices. That makes no sense. It makes much more sense that he's actually a short seller. Or if he's now for whatever really bullish, that he already bought. Nobody is going to announce that they're going to buy soon, that's the dumbest thing anyone can do.
You have assumed they will short, I have said what whales do, they say "it's a bubble", price goes down then they buy, then announce official involvement in the space (not saying what they will do specifically). This is what Jamie Dimon did with JP Morgan.
I will not say I know what the hell Soros is going to do, im just saying that the facts remain:
1) You can't kill Bitcoin
2) You can only slow it's growth
3) You can take advantage of your ability to cause 2) in order to accumulate more and become a Bitcoin whale since 1)