Here in the philippines bitcoin is a scam thing now because of the fake news. Some people go invest then when they scam by tge other or the developer they report it. Thats why bitcoin has negative eyesight in our country.
that is the reason why some countries are banning BTC. they believe it has negative impact on the people and economy of the nation but because BTC is decentralized, It make total banning even more difficult. majority of ICO doesnt allow US Citizen due to their Law but US citizens are still participating Illegally in ICO that doesnt require KYC verification. however bitcoin is not Scam but people participate in scam project like HYIP and Ponzi Scheme using Digital Currencies Like BTC.