I think that's probably true, actually, but it wasn't really what I was trying to say.
The point is that stockbrokers are doing a trade for you, that you can't do yourself, and they're not involved in the trade's result other than charging you a commission for doing it. Forex brokers of the kind we're discussing are involved in the result, because they hold the other side of your position, and your "position" is actually no more than a bet against them..
That's not to say that you should avoid all of them, and you may not be able to (unless you have enough funds to open an account with a genuine broker, but very few people here do).
So it's a question of choosing the safest and best-regulated one you can. Which isn't easy.