I don't have a dog in the fight regarding e-bikes but I have to agree with you about fat tire bikes. They are clown machines.Oh hell no.
Fat tire bikes in general are asinine and aren't bikes, they are monkey machines. My definition since you are doing YOUR definition is NO because fat tires. Yah can't friggen pedal that silly thing.
Feds have some regs, some states have stupid wattage regs like feds. Those are stupid. They are somewhat akin to idiotic gun laws.
They're just flat out goofy looking. It seems they've lost their appeal as I see far fewer of them around town where we have our beach house and I believe riding them on the beach at the tide line was supposed to be one of their features.