The faulty premise I see here is that squishy bodies will even be relevant as we climb the scale. Exo-suits are already a thing that can make us stronger in spite of muscle atrophy. And further up the scale, in-silico intelligence will replace the need for a highly inefficient body to power our highly inefficient brains. We could even down-throttle our consciousness to make journeys to distant stars. The future will be so abstract to us that we can’t even fathom what humanity will have become.