It is a good idea to take into account all factors affecting a market, even if some of that news might be influenced or biased or has some agenda - it might lead to some opportunities that might arise that may not otherwise have been there. But yes everything does need to be taken with a grain of salt.
The news has a huge impact on the cryptocurrency market so the mainstream news can completely help the market recover after a long period of decline. Because the market is small compared to its potential, I am very hopeful that there will be new sources of investment that will help boost the market.