"The specs promise a reality that the tiny battery cannot possibly deliver."
The 350W motor provides basic acceleration on flat ground for a light rider. However, the tiny 187.2Wh battery means the '15-22 mile range' is a theoretical ideal, not a real-world commute; expect 8 miles or less.
A lightweight person needing to travel 1-3 miles on perfectly smooth, flat surfaces might find value here if the budget is immovably low. It could function as a disposable last-mile vehicle in a high-theft area.
Anyone commuting more than a few miles, weighing over 180 lbs, or living in an area with hills should avoid this. Riders expecting a comfortable ride or more than a year of use should save up for a product from an established brand.