Bloomberg is a trusted source but no one knows the future. You can predict a bull run or a bear market but you cannot be 100% sure what will happen in future. I do believe that we have seen enough of bear market and sooner or later , its a time for the bull run.
Just like CNBC, but what does it have to do with the accuracy of their predictions? We trust them with some statistics and numbers, but they are often wrong, not because the numbers are wrong or because they want to misinform their viewers. They are wrong because they follow the mainstream attitude.
In 2015 and early 2016 they all were skeptical and predicted lower lows fort Bitcoin. In 2017 they hyped people up when we were near 20k, and so on... They always tend to be overly negative in bear markets an positive in bull markets.
Also, it's funny how the media can describe a drop followed by a recovery as a bull run. If something falls down 50% and then goes back to the price it had before the sell-off, it's just recovering after a drop, not experiencing a bull run.