What they are saying is that the improvement in gas mileage is either:
1) Not because the hydrogen is being produced as a fuel.
2) The hydrogen that is produced is produced outside of the vehicle so no net gain is apparent.
3) If as an additive, no one has isolated the mechanism that allows the fuel to burn more fully.
All we are asking for is some study to the effect.
How much hydrogen is produced and in what amount of time.
How much harder does the engine have to work in order to produce the hydrogen.
How much fuel mileage improvement is there if the O2 sensor hack is employed WITHOUT adding any hydrogen?
Test these things out, report your results and you may get people to take you seriously.
1 amp for 1 hour will produce 6 litres of gas
it is about a 3%load on the alternator