many good points. many typos. you keep misspelling 'its'.
a simple unmade ground point: as number of txns grows, energy spent nonce-finding per txn drops (assuming hashrate constant).
your new and deeper point is that as as number of txns grows even larger, energy use switches from hashing to processing (so hashrate drops or grows slower). but energy expenditure per txn begins declining before that.
many good points. many typos. you keep misspelling 'its'.
a simple unmade ground point: as number of txns grows, energy spent nonce-finding per txn drops (assuming hashrate constant).
your new and deeper point is that as as number of txns grows even larger, energy use switches from hashing to processing (so hashrate drops or grows slower). but energy expenditure per txn begins declining before that.