Seems like at the very least it would require a different set of tools and knowledge. I can do pretty much everything down to completely tearing down and rebuilding an engine so replacing ball joints or suspension A-frames is easy for me, but I expect that sort of thing to be outside of most people's knowledge. Even so, there's quite a lot that anybody can do to maintain their current vehicle without needing any special knowledge they can't learn in five minutes. What can we do ourselves on an EV to keep the batteries and motor in good running condition, and how would we even know that there's a fault that needs addressed? I can't imagine a cheap EV having a full range of sensors installed, and yet on an ICE you can easily hear or feel when something isn't right with the engine.