They have been shaping cheap steel bikes like that for years to make them look like aluminum. Some of the buyers aren't even looking for an aluminum bike, they

They have been shaping cheap steel bikes like that for years to make them look like aluminum. Some of the buyers aren't even looking for an aluminum bike, they just want a 'bicycle' that looks modern. It's a pity because it means the bike is much heavier than it would be if it had nice slim steel tubes.