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.
Taking risks means to invest. We still can move on from being a newbie to experienced, by simply reading and researching. We can as well practice what we have learned using the demo version of some platform. There are people who are into crypto but still discourage others to continue. So, these people can sell early and they will acquire those Bitcoins at cheap rates. It is a kind of tactic but it's only unethical.
People give advice according to their experiences. Sometimes it's not wrong to get advice from one person only because it can already give you the answer that you need and if we seek from others opinions, our decisions can change because they can give wrong information.