I don't think Twitter can actually affect the price of bitcoin, for sure many people get some info but those who can really change the market don't care about Twitter, they do whatever they want.
I agree with you. I know that many traders use Twitter and many of them follow the tips on Twitter. but for big market like bitcoin. I dont thinking that Twitter has a big influence on the price changes in Bitcoin. because compared to the total of users reaching millions of users. only a small users of traders follow trends and tips on Twitter