"Packing a fairly powerful 250W rear hub motor, with three levels of e-assist, users can reach speeds up to 20-plus MPH" A 250w motor is nowhere near "fairly powerful". It is better than nothing (but not much). When you consider this ebike weighs over 43 pounds compared to a regular bike weighing only half that, a big chunk of the motors power is needed just to match the rider's effort on a non-ebike. If you live in a flat state like Florida where I live during winter, 250w is the bare minimum & will work (just), but when I come back to Pennsylvania, I need my 750w with 9 PAS levels to get up our hills. Trek ebikes are overpriced and under-powered. You can get a way better ebike from Ride1Up, Rad Power Bikes, Lectric, Aventon, and more with larger motors, more PAS levels AND for less money!
BTW: Yes, I have ridden Trek ebikes. I own 4 ebikes and have also ridden ebikes from the companies listed above.