Can't steem (on graphene) operate at bts level speeds too?

where did you get expected blockchain size growth rate for eth to be that low? it looks really wrong.

eth scales much much much much worse than bitcoin

it's been doing far less tx for most of its short history than btc and already larger in size and growing much much faster
http://bc.daniel.net.nz/

roughly 25-30x times larger growth in size at same tx rate as btc. "It's close to impossible to keep a full copy of blockchain and state on consumer hardware."
https://ethereum.stackexchange.com/questions/143/what-are-the-ethereum-disk-space-needs/826#826