While Gas-to-Liquid is not a hoax, it is a tough economic hurdle in the US. In a country like Qatar, where there is far more gas supply than consumption, keeping the local price low, they compete with LNG rather “normal” natural gas.
LNG is a relative expensive process (compared to the local price of Natural Gas). In that market, it is more economic to spend similar or even significantly more money to convert to a much higher dollar product for delivery to Europe for transportation fuel.
This is supposedly a different "new" GTL process. I don't think the $25-barrel gasoline claim sounds like an economic hurdle.
According to my thumbnail calculations, that's a wholesale price of 59 cents.