You are right that the trading experience itself that is done consistently is a very valuable lesson.
Reading articles or writings that someone can get a lot of money because of the trading they do can hypnotize our minds and give rise to a high sense of confidence that we can get money in the same amount as them. This is the beginning of a trap that will determine two outcomes, safe or lost.
It can help to learn something from others, however, the main teacher of a trader is the market itself and his own experiences of it.
Sure, sources can provide different theories and info, but in the end, you utilize it in your own way.
Not wrong in my opinion. Other parties can help traders to find out how to trade, but do not always depend on other parties. Just know the basics after that, make the market as the main object to control themselves of what will be done next while remembering that it will not always be in a profitable position. Even professional traders also experience loss.