I guess I get where they were going with this term, "synthetic hybrid", in that they have tried to synthesize a suite of desirable traits (e.g., disease resistance, productivity, etc.) into a single cultivar, but it is kind of a strange term, in that it seems to only be used for man-made banana hybrids and not other food crops (that I'm aware of).
Anyway, I've been enjoying the synthetic hybrid FHIA-18 fruit I've been eating for the last week. It's a quality cultivar, at least for my tastes. I still slightly prefer my "non-synthetic hybrid"
, Dwarf Brazilian (FHIA-18's mom) to it, but the taste is pretty similar to me.