Totally agree. It really only works out if they already have power tools or lawn tools that utilize the batteries meaning that they already have the battery and some kind of charger.
As far as 40v saws, if they are doing any serious cutting, I'd want at least a Stihl 261 or comparable and there isn't an electric saw that will touch that. I'm only talking about people who want a saw to clean up the occasional downed limb, or who only cut enough for an occasional campfire. Admittedly, I'm not up to speed much on batterie powered saws, but if that was all I really needed, I'd take a slow 20V saw that used the same batteries as my drill and 1/2" impact over a 2 stroke. It might be slow, but it would always be faster than having to take the saw to a shop to have the carb cleaned and/or rebuilt before I could use it. Ideally, I'd already have a 40V or 60V system that I used with a string trimmer, blower, hedge trimmer, and/or pole saw, but you're still looking at spending some big money for those electric saws.