What makes you think that article is "decent" and is worth attention? P. S. True about 98% of B. S. on forums too... But don't fall prey to common fallacy - faith in what's written/talked about in the media. In reality it's usually no better than any other B. S. just packed better and promoted better.
This is the one article that lay it down in a summary , and it is everything that I have seen proven on statistical back testing over 10 years.Not only does the article put it concisely with good reasoning , but it is confirmed by other studies made using automated programs and back testing. Now compared against the the biased posts here of system sellers , mentors , trading educators , rebuttal teams ,marketing stooges and their accomplices etc.The posts of these people have no credibility. The forums have one agenda ,to make money for owners and are biased towards sponsors who pay them.
I want them to hand their money over to the mentors, trading educators , bucket shop sponsors , scams , system sellers and trading pimps and brothels like prop firms , before the day trading takes it away from them. I thought this was a unbiased opinions on E T , until the pricks started opening opening positive sentiments threads ,until a bigger prick comes along to open more threads than all the small pricks put together.
What a comprehensive list of pricks who prevent 95% of wannabe traders become rich overnight. Sure world would be so much nicer without them, everyone would make a fortune trading and poverty would cease to exist.
So if I post a chart without the time frame but tell you it is daily, then that is a chart that can be traded profitably. But if I say, actually it is a 5 min chart - they you will say it can't be traded profitably. Bet you can't tell the difference.
It is not about time frames ,it is more about timing entries ,being on the right side of the market , but this entry is only one out of 10 aspects of trading , others are risk management , trade management , phsyche , exit , additional entries , money management ,re-entries , stops and targets.
Not really day trading fails primarily due to higher overhead costs than other time frames. It really isn't all that hard to see. It's kinda funny when you think about the HFT firms battling it out for 1 tick.
If your rules are to get flat at an arbitrary time say EOD (like in daytrading ),yeah it makes a huge difference.
Day trading suffers from spread costs which make a large % of profits , small profits /larger losses , not enough big trends intra day , noise and wind technical analysis , plenty of false breakouts and reversals , high volume trend breakdowns ,much false volatility due to economic news etc