People pushing technical analysis do believe that it's pointless to look at fundamentals because all (or most) fundamental information is already in the price and hence it's pointless to look at fundamental data. In my opinion this discussion is about as pointless as a religious war.
In the real world specifics and details matter. In general, the weak form of the EMH does hold, as in if you think something is worth twice what the market says it is and you don't have a really good reason why the market doesn't realize this, you are almost certainly wrong. This of course makes a weak form of the claim that all fundamental information is in the price also true.
The way it was explained to me is that if the EMH is true, then looking at fundamentals is pointless because all the fundamentals are already priced-in, which leaves nothing but price and volume data left to analyze.
How could EMH be anything other than true in that case?
I'll note that investopedia is often not a good source. Here's an investopedia article that explicitly supports my position, for example: https://www.investopedia.com/terms/t/technicalanalysis.asp
So, TA proponents believe that market forces, economics, political and social trends, etc, are all instantaneously absorbed by the market - but "double tops"[1] and "hanging mans"[2] and "three black crows"[3] are all low-hanging fruit that the elite can take advantage of?
I'm usually pretty open-minded, but I can't make myself see anyone believing this non-ironically.
[1]: https://www.investopedia.com/terms/d/double-top-and-bottom.a... [2]: https://www.investopedia.com/articles/active-trading/040914/... [3]: https://www.investopedia.com/terms/t/three_black_crows.asp
I'm afraid I don't know what else to tell you, there's no public links to CFA Institute study materials and they're a pretty definitive certification authority in finance.
If EMH is strongly true, then the price of a security will always be priced to the intrinsic value of the underlying. For TA to work, the price needs to be divorced from the intrinsic value because the change in intrinsic value of an asset doesn't follow any pattern.
If EMH is strongly true, even fundamental analysis should yield no alpha since all public information would be integrated into the price. That's why there's a distinction between strong and weak EMH.
https://www.investopedia.com/ask/answers/032615/what-are-dif...