"The spec sheet writes checks that the $600 price and basic hardware cannot cash."
The '1500W Peak' rating is a marketing figure for brief acceleration bursts; the '750W rated' power is the realistic sustained output, which is still quite powerful for this price.
This bike is for a DIY-inclined buyer who wants a powerful motor and large battery for a very low entry price and is willing to perform their own maintenance and upgrades. It's a project bike, not a finished product.
Commuters seeking reliability or anyone planning on serious off-road use should look elsewhere. The weak brakes, basic suspension, and questionable build quality are not suited for daily dependence or demanding terrain.