Twitter is just a part of media like print / electronic or social media including Facebook; linkedin ; You Tube etc. And each type of report on any type of media has effect on the price of bitcoin. When there are positive news the price goes up and in case they spread negative news then the price falls.
I agree because Twitter or any social media is a way expressing their thoughts so when some bad news about crypto it will affect too to the market also when theres a good news of course theres impact too in crypto market. People now us depending on what others says in social media that's why sometimes market down immediately when they hear a bad news.