When people talk abut cryptocurrency adoption the conversation always seems to be around the technical and logistics of how coins/tokens can be adopted. In reality the problem why certain cryptocurrencies aren't adopted doesn't have to with people understanding what they do and how they work it's a much bigger problem called Public Relations.
Most normal people have only heard of Bitcoin and even though it's seen as being a valuable asset the public perspective of the crypto world is of it being this seedy underground of scams and criminals. The reason why is because the stories that get a lot of traction from the media involving cryptocurrencies often times are on the subject of illegal activities for example the infamous Silk Road or on the scam side of things BitConnect. These are the types of stories that will get the most viewers/clicks for media companies so there is a financial incentive to run the stories that push the idea that the cryptocurrency world is this seedy underbelly when in reality a lot of the people in the crypto world have good intentions and are trying to bring around positive technological and financial change.
The biggest hurdle is changing the way the general public see's cryptocurrencies and to make cryptocurrencies more user friendly. This is the only way to push mass adoption.