Totally agree with you.
What traders need, is a system suited to THEIR own personality. That they can execute. And a back test, done by hand. Written down. Over a minimum of 5 years of data or 3000 trades. For Intraday trading.
Then they need to adjust their Psychology to be able to trade the system through drawdowns.
Show me Tejas, How many people have you come across that are doing all this?
Even the people who are maybe winning for the last few months may get the shock of their lives, as the markets are currently trending.
If God forbid it goes into a sideways, low volatility phase like 2017, these traders will get wiped out, as they would have ramped up their volumes, and the low volatility would hit them at their biggest size.