If we don't take the risk then we will always remain newbies and its obvious that expert must spend the stage of newbies and then they become expert. Those who discourage others are those people who don't get anything from crypto trading and investment and now they are spreading wrong information because if they miss the chance of success so they also cannot see others to be successful.
Newbies should also hear from different people as if they get advice from only a single person then he will talk according to his experience but sometimes experience can be change from person to person. It is not bad to hear the words of others but I will suggest that listen to others after that make research about it through videos and articles so you will easily take the better decisions and better advice from it.