There are reasons why some traders just go and trade without any constraints and just treat trading like gambling. It's almost always because of the envy of other traders that they see and want to imitate their gains and don't want to go through the process of learning. I recently read something about maturity when it comes to trading, that you need to be mature enough to know when to trade and not just risking your capital every time.
Exactly, those people do not understand that even if they are performing the same activity the risks they are taking are completely different, it is like driving a car, the ones that took a course and took the activity seriously can drive safely and will rarely suffer a car accident, while the one that just saw that person driving and wanted to do the same will take all kind of risks and sooner or later it will be in a huge accident, and this same kind of thinking applies to trading as well.
The problem with that is the fact that they may hurt the other people as well. Going with your analogy I can say that I could be the best driver in the world, I could be Lewis Hamilton but if someone else crashes into me then I am still in a car accident. So that means it doesn't matter how good you are, because if you are bad then you are hurting not just yourself but to everyone around you and that is the problem with trading as well.
Individually it is not possible for people to hurt others to be honest, but when you have thousands upon thousands of people trading badly then the price goes opposite of where it should, charts says it should go down and then some bad traders come up and do something wrong and end up losing money, they end up buying something that should go down, and then when they lose money they go around and say that bitcoin is a "scam", so that is why it is still dangerous for good traders even if they know what they are doing, since bad traders could crash into them as well.