I love that you bring this up! Although perhaps you are incorrectly insinuating that I don't understand the underlying value of various blockchain technology, which would lead me to believe this is the first time you've met me.
A change by degree transitions to change in kind is why the charts continue to go up, despite the repeated calls for "bubble". That's what people in finance either do not understand, or are afraid of.
What you call a crystal ball (and perhaps unfairly group me with those whose calls you've seen go south (which is precisely the reason I created this blog)), in fact represents the underlying mechanisms of human behavior; emotion, fear, greed, collective reasoning, etc.
While I do agree with you that those many 'technical' 'analysts' who draw a bunch of lines and then predict "UP!" may be throwing darts in the dark--the analysts who are good at recognizing this aforementioned behavior can be an invaluable tool for making educated decisions that many profit from. The trick is to recognize those whose calls are valid, and winnow the chaff from the wheat.
I appreciate your comment.
Good luck!