*Face palm*
I believe yes, they are hiding it. It's their strategy to keep their losses and only expose their earnings to attract more investors.
Wait, what? I hope you are not being serious when you said this.
I am confused, investors? to what? Traders don't hide their losses to attract investors, because they are the investors themselves, they invest their own money, they don't create schemes which they will give referrals to people, ride with their trade, and will run off once they don't earn profits, that's not like that.
Every business type do the same thing. That's how they promote their products. They will build it with positive reviews. That's a marketing strategy and and we can't blame them for that.
Trading is a business, indeed, but I don't agree to the point where you say they hide their losses to attract or promote their products, maybe if we are talking about exchanges, I will agree, but we are talking to individuals who act solo on what they are doing. They hide their losses because there is no point of showing it, your failures makes your success more louder, bear that in mind.