Every inverter on every house I own is rated by the PV input. If it is grid interactive, isn't that the common method? If you have a homeowner looking at grid interactive inverters, why would it be rated any other way?Something should be done. Like I said, it isn't technically lying but misleading so going into civil court won't get you far.
With your audience, you would be in a better position to influence changes. I'm just some little guy in Timbuktu, IA.
I would consider the 18Kpv but given the misleading name, I'll just go elsewhere. About the only thing a little guy from Timbuktu, IA can do. EG4 has some good products and I've stated as such, some were turds and I stated as such. I give anyone a fair chance in life, whether they decide to shine or lay down in the gutter is up to them.
If you have off-grid specific inverter like victron etc, they are always rated by the AC output. Or the 6000xp. Or any other.