I don't trade to get rich.
The common statement that traders lose 90% of the time is relative to Bitcoin buy-and-holders. ("Bitcoin buy and holders" make more money than crypto traders 91% of the time).
I scalp small amounts of my Bitcoin profit when I feel like playing and tinkering, if I see a high-volume alt-coin showing a strong buy-pattern - like Monero has shown all day today.
I don't recommend people do it but I KNOW people WILL so I try to help to educate them on doing it right.
All my trade profit goes back into buying more Bitcoin.
It's my money. I'm well ahead of the game. I'm entertained.
Thanks for the comment - the 90% number, or at least the one I was referring to, is actually nothing specific to crypto, but seems to be generally accepted across all trading - stocks, forex, commodities etc. I see no reason why it would not apply to crypto
Sounds like you have a method that works for you, in which case great - that was the point of the article
Cheers