Greed has never had any good report when it is being taken to the extreme. Taking out your profit when it is due is very good and helpful to avoid facing loss of values in the price of your assets. The market is not owned by anyone, which means anything can happen at anytime. Posts on different social media platforms is not a good point to lay your attentions on. Those can just be some hype that will shutdown in no time. To be at the safe side, place a price mark on your portfolio/assets, cash out your profit ASAP and stay with the market to get the needful information for the next trending asset.