Just to say, if you check out the dev diary on end game disasters you'll see that it will totally be to the same extent as the xenon. The AI rebellion is a major disaster, and unless it's nipped in the bud very early will rapidly become a serious threat to the whole galaxy as the AI can rapidly out-produce and out-tech its organic creators.
Heck, even if you avoid robots and AI tech, there's nothing to say that other people won't dive in and the more intelligent robot pops there are in the galaxy the greater the chance of AI rebellion.
Apparently, you can eventually give the AIs equal rights in your society, and even let them run for leaders and such. What effect this has on the rebellion is unknown, but it might reduce the desire for liberty or possibly even cause the AI empire to leave you alone if and when it happens.
All fun stuff to discover, and if you're worried just remember the dwarf fortress motto ("losing is fun"), because that's kind of true even in games with a win condition.