I'd argue that Amflow have sold more ebikes than any other brands ebike model in the past 12 months. Speaking with dealers who sell them, they've sold many multiples more of the Amflow than other ebikes they stock, and other premoum brands too.
I think we are kinda on the same point here anyway. My point being, that any brand that isnt using DJI has a choice:
1 - Make a fat downtube bike (makes it heavier because more material, bigger battery) Trek Rail, Mondraker etc
2 - Make a slimmer bike, with a smaller battery, but nicer looking (Santa Cruz Vala, New Giant Reign), with less weight, but less range
My point really is that the DJI bikes allow for slimmer bikes, with big batteries (or smaller, as the 600wh also fits in the 800wh bikes).
I strongly believe that the brands are choosing aesthetics over function when making smaller battery bikes.
Here's some real world comparisons:
Crestline Spectre
1000w motor, 800wh battery, 180 travel front and rear, removable battery, fast charging, slim looks, 22.8 KG
View attachment 169235
Giant Reign
800w motor, 560wh removable battery, 22.6 KG
View attachment 169238
View attachment 169237
I guess my point is that you are not really compromising bike weight on the latest systems by having a bigger battery and more powerful motor. In fact, run a 600wh battery and make it lighter than the new Giant, with more powerful motor and the other benefits of the DJI system.