Perhaps it's just due to variability in manufacture, but I don't see how I can bend or break off the battery key on my two brand-new ST bikes. There's plenty of slack in the cable bundle so that it never puts pressure on the key while folding. And so far at least I'm just leaving the key in and on, as I suspect there is minimal current drain. Perhaps that preference will change as I spend more time with the bike.
Lots of other differences of opinion with other commenters. As already clarified, battery simply can't "fall out." There is a metal retractable peg. Secondly, my cable brakes felt lousy--until I removed the cables and lubed them. Now they are almost like hydraulics.
As for bike racks, I fortunately years ago had bought a "Softride" receiver-mount rack. Weighs a ton but one of the horizontal supports slips under the frame just in front of the rear fender, and I've found a beefy strap perfectly supports the front of the bike from the small frame tube located just over the controller location. 600lb capacity on the strap--it isn't going to fail. And this particular rack has a parallelogram design, so it can pivot away from the vehicle for rear hatch access.
The Black Friday seat post and seat are wonderfully comfortable and the post won't slip. The handlebars can telescope up and down for a variety of riding styles and heights. The Step-Through version offers an easy means of mounting and dismounting. As for weight, yup, this thing's "beefy" but much of the weight is battery and motor. No way around that. Willing to shave 20 lbs off the rest of the bike with a carbon-fiber frame if it makes the price $5K rather than $1K? I suspect some would but most wouldn't. Even at its present weight, its foldability provides additional benefits in various situations, such as winter storage.
This is an excellent bike for the money. No wonder the Lectric folks are selling A LOT of them. When ebike brands shake out over the next decade or so, I think Lectric will be one of the survivors.