It's marginal gains all the way here but genuinely if you're an omnivore the E-Bike might work out more enviromentally conscious
Just because I am the type of person that I am I have to point out as to whether an e-bike weighs more than a regular bike depends highly on the regular bike and also the e-bike honestly. They made some heavy ass acoustic ones, they make some lightweight e-bikes. Latter with little range, mostly, to be fair. I say this to ask if somebody shipped some heavy ass steel bikes, would you be concerned as per CO2 Output?
I know sea freight is very efficient, but there's no reason not to account for the difference if we're making the comparison?
I mean it's there, but it's genuinely just marginal. Like 0,03% of the CO2 Budget of any given bicycle were it ridden.
Now the resource extraction I don't have numbers on and it probably sucks. People buying E-Bikes to ride them 200km over a 10 year period probably also isn't great for CO2-output - in the context of bicycles - but if we assume what gets shipped gets used it doesn't matter