Complexity is going to inevitably make everything harder to repair as it becomes ever so involved to learn and understand how things work.

However, it need not be harder than it should be if manufacturers are not hostile towards 3rd part repair. That’s job of the government to mandate it. Most manufacturers want control over their processes to ensure, in the least, the repair is done right and it won’t end up as bad press and reputation damage due to someone else’s screw ups.

EVs are in their infancy. So don’t expect perfection just yet. Give it a few decades and regulation will catch up.