[l_t]

That makes sense, thanks. I was definitely thinking in a nearer-term context.

Even in that distant future though, wireheading would be a practice that fundamentally damages the emotional feedback loops that led to that type of society being formed in the first place. (i.e. the feedback loops that cause people in a society to reject agents that want to change or destroy it.)

Without those feedback loops, a perfect utopia would become an unstable equilibrium, because nobody has any reason to prefer that society over any other society. Thus, you could argue that wireheading is long-term incompatible with a perfect utopia.

There is an "out", which is to just have some of the population wirehead, and then have the society be steered by the individuals that don't wirehead, and therefore can make ethical decisions. Alternatively, you could emulate Ian Bank's Culture, and remove decisionmaking power from human hands entirely via automation. But really, even in that world, I'd rather be one of the un-wireheaders who retained their ethical agency, even if it came with suffering. At least, I think I would... although I'm not sure exactly why.