All regulators have to look at is does the advertising cause obvious and expected confusion to consumers, and the answer here is absolutely yes. Generator is a commonly used term and this sort of advertising is blatantly confusing to the average consumer. Other products include the terminology "gas-free" or "solar-powered" to avoid confusion. This just says "portable generator" which is simply not clear.
Anker knows this, hence why the first PowerHouse says "Generator Alternative" on Amazon. They chose the terminology specifically then but for some reason didn't now.