Yes, with basic and common tools. Doesn’t mean they have to be of quality, cheap metal screws for example. Hopefully not the case but it’d be annoying.

For example if they opt for the screw method, over the pop-off back (which I’d prefer). There will be screws to remove, most likely a gasket to replace, tape or something that ensures the battery doesn’t move around etc.

Even with current battery replacements, there is more parts then just the battery during the replacement. And of course “without causing damage” except if you have to remove the back that is glass and knock it off the table, that’s a +1 for apple, same if you loose a tiny screw or something else that is 1/1000 chance but Apple still makes money.