No amount of counter campaign can be raised against bitcoin by anybody since bitcoin is independent of anyone as well regardless of country which is why we all benefits the decentralization it offers, in making research, you don't have to limit the extent your how far you can go in making research, there are alot of factors that can discourage or deviate your search and interest on bitcoin, such from government counter campaign against bitcoin, altcoins distractions, ponzi schemes allegations among many other things you could cone across with online that actually talks opposite about bitcoin, but learning is as good as taking it from many sources and looking deep into the past records it has over years, you may also need someone to testify and encourage base on experience in dealing with bitcoin.