I think because the big investors left btc because of those negative news about bitcoin was a bubble but they can't shut down bitcoin, bitcoin have a big community like that scrappy news from social various is not enough to shut down bitcoin
I think they're just FOMO, they don't really leave bitcoin and while just moving the concentration to Tether USD for stable assets, bitcoin is still shrouded in a downtrend and forces them to get caught up in panic, but this will end because there will be a period which is full of saturation where many people want bitcoin to get a rally in the fourth quarter.