In FX trading people are putting up capital to create exchange ratios, which is information. Right now people are putting up capital to determine how much coin issued by a central bank with a "deflationary" bias written in code and run and administered by a collective (i.e., Bitcoin) is worth vis-à-vis USD. Something is most definitely being created.
You seem to be arguing that trading fiat↔fiat is comparable to trading fiat↔BTC. In which case I agree. That's the point I was making.