My brother (who also reads HN) has spent long periods living "on his bike", and still opts to pull a trailer with a small flexible solar panel on top of it in order to provide power for his laptop. He has a dynamo hub too, which is generally fine for recharging his phone, but since he tends to want to do work too, having the laptop be charged also is important and I don't think that the dynamo is capable of that.
But yeah, overall, way to much weight. But 80's, 90's tech probably needed the current.
A modern nomadic bike would just be a touring bike + iPhone?