Referring to AIs that don't want to kill humans as "friendly".
Necessary, within the an infinitesimal subset of mindspace around friendliness but not quite sufficient. Examples of cases where this is a problem include when people go around saying "a friendly AI may torture ". Because that is by definition not friendly. Any other example of "what if a friendly AI thing did " is also a misuse of the idea.
Referring to AIs that want to kill humans as simply "unfriendly".
That seems entirely legitimate. uFAI is rather useful and well established name for an overwhelmingly important concept. I honestly think you just need to learn more about how the concept of Unfriendly AI is used because this is not a problem term. AIs that want to kill humans (ie. most of them) are unfriendly.
Referring to life extension as "immortality".
Do people even do that? I haven't seen it. People attempting immortality (living indefinitely) will obviously use whatever life extension practices they think will help achieve that end. Yet if anyone ever said, for example, "I'm having daily resveratrol for immortality" then I suggest they were being tongue-in-cheek.
want
AIs that want to kill humans (ie. most of them) are unfriendly.
Just as "want" does not unambiguously exclude instrumental values in English, "unfriendly" does not unambiguously include instrumental values in English. As for the composite technical term "Unfriendly Artificial Intelligence"...
If you write "Unfriendly Artificial Intelligence" alone, regardless of other context, you are technically correct. If you want to be correct again, type it again, in wingdings if the mood strikes you, you will still be t...
This thread is for discussing anything that doesn't seem to deserve its own post.
If the resulting discussion becomes impractical to continue here, it means the topic is a promising candidate for its own thread.