Yeah, learning all by yourself is something I suggest, because you are not technically learning by all yourself. When you watch a video, someone made that video, when you read something, someone wrote that, so whenever you do something like this, there is really nothing to worry about and you are going to end up with a good result one way or another.
So many people are using others to learn, just not directly mentorship and chatting, so while you are "self taught", you are not really all by ourself and that is the most important part. I do think there will be a lot of people who will use this as advantage and we are going to see them do fine as well. This is just how it is and we are not going to see much changes in the future. So, learning that way is the best way to move forward IMO as well.
Actually, with the many accesses that we can reach today, it can help us in getting certain learning, whether it is in trading or in other things. In addition, even though we can get learning in utilizing this developing technology, we must also be able to learn from our own experiences, also to get experience we must do it first. If we are just starting to trade, we should be able to find as much information as possible for sufficient knowledge and start with minimal capital.
You are right, if it is said to be autodidact, it seems impossible because there is information obtained from things seen or heard that help us gain new knowledge. Maybe it is said to be autodidactic when we really explore it ourselves without utilizing technological developments at all, but that seems impossible too.