It's really about the ratio of chain thickness to bike crappiness. In general, I'd say anything that requires an angle grinder (serious chain, good U-lock type

It's really about the ratio of chain thickness to bike crappiness. In general, I'd say anything that requires an angle grinder (serious chain, good U-lock type locks) is fine for most bikes. I'd say the same criteria apply to E-bikes. You do have to make sure you're attaching your bike to something solid, though.