Sorry, I should have been more explicit, what I meant to say was: (2) Inserting a pleasure-causing wire into your brain and then doing nothing but sit around feeling pleasure all the time, doing only doing the bare minimum to stay alive is almost always an example of doing (1)

Well supposing someone does this, how exactly is it simplifying their utility function?

I think the terms "Ego Syntonic and Ego Dystonic" are helpful here. Some heroin use may be ego-syntonic, but full-blown addiction where users cry as they inject themselves is full-blown ego-dystonic.

Perhaps, but is it possible to draw a clear line between what is Ego Syntonic and what is Ego Dystonic?

Also, I am a bit skeptical of this approach. Apparently under this approach, wireheading in moderation is not Wireheading. As mentioned above, I disagree with a choice of definition of Wireheading which excludes actual wireheading whether in moderation or in excess.