Well - did you read it?
I only took a quick look, but the conclusion does say the head and shoulder pattern is profitable for 2 of the 6 currencies tested.
Usually, you find proof of what you want to find. You have decided that TA or charts have no predictive value, so that's what you'll find.
Personally, I prefer my own research and that of other market participants (see for example Market Wizards by Schwager), but there actually seems to be a good amount of academic research suggesting TA have some merit.
The profitability of technical analysis: Evidence from the piercing line and dark cloud cover patterns in the forex market
We examine 112,792 daily candles using more than one million spot quotes among 24 currency pairs between 2000 and 2018. We find that chart patterns are profitable. Relying on these visually based patterns achieves returns of more than 600% after accounting for the transaction costs.
The Profitability of Technical Analysis: A Review
Among a total of 92 modern studies, 58 studies found positive results regarding technical trading strategies, while 24 studies obtained negative results.
Not quite correct. Those who outperform have usually been remarkably consistent, too.
The last decade have been remarkable.
Regardless, nobody is in disagreement with the fact that 'beating the market' is difficult. The high failure rate in trading is known.
Maybe you have something to build on there, then...
I happen to be an engineer as well. Not even remotely comparable to learning trading (as an outsider). As an engineer or any other academic field the curriculum is widely known, available and presented in multiple angles with multiple people who can help you. And when you graduate you can do a sloppy job and still get paid.
In trading, you'd need to spend years just trying to figure out what the curriculum is. And there's not much room for error.
Meanwhile, you have trading educators who are ready to sell you their books and systems who if they were any good wouldn't be sold, but traded. That's why Simons and similar wasn't into the teach-people-to-trade business, but make-myself-filthy-rich-from-my-own-ideas business.