Abstract rational logic seems to be very poor in this place. I often forget how the elementary must be tediously explained.
Or... you're not nearly as smart as you think you are. You might be extremely intelligent and well-read, but you are plenty fucking stupid. There's no point in having ideas, regardless of quality or merit, if you can't convey them such that people can understand them.

250kg GVWR on a folding chassis is some proper capacity. And ~27kg for a folding longjohn seems entirely reasonable. My Larry vs Harry Bullitt was ~21kg.