I understand what you mean. However, you'd be surprised at how many people buy a battery saw and don't think about the bar oil. They do just plug in a battery and go... they just don't go for long without ruining their bar.
I currently have a couple of gas chainsaws. I recently added an electric chainsaw (Milwaukee M18 Fuel). It certainly is convenient for lighter work... and it's quiet. I sometimes start out the day with that when working in the woods in the early morning, so I don't disturb those living nearby. I'll clear saplings, or limb trees I took down earlier. I have to be careful though: with my gas saws, I'll run out of gas before running out of bar oil. If I start with a fully charged 12 AH battery in my Milwaukee, I'll run out of oil long before I run out of charge in the battery. I may have to switch to the 6 AH battery until I get used to checking on that more frequently.