Биты-ситхи были. А у них с эмоциями специфическая картинка...

Тоня Позвоночник
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Атрофированны у них эмоции, на уровне строения мозга. Почти все.

Атрофированны у них эмоции, на уровне строения мозга. Почти все.

The Sith are people who are very self-centered and selfish. There used to be many Sith, but because they hunger for power, they killed each other off, so now there are only two - a master and an apprentice. Sith rely on their passion to get things done. They use their raw emotion, their hatred, their anger, their bitterness - which is the dark side of the Force. The Force is what binds the galaxy together, and it has a good side and a bad side. The Sith learned how to manipulate both sides of the Force, and then they fell into the trap of being corrupted by the dark side. The Jedi Knights are like marshals in the Wild West. It's their job to make sure everyone is protected, to bring peace. They are the enemy of the Sith, because the Sith want to dominate the galaxy, to control everything, and for a thousand years they have had a plot against the Jedi. So, in this movie, it is time for them to seek revenge against the Jedi for perceived injustices and to carry out that plot.

и источник не очень понятен

Даже Искусственный Интеллект сможет стать ситхом?

Источник как раз очевиден - это The essential guide to alien species, от первой до 3.1 "New" версии, ретконы минимум до 2006 года включительно.

достройка "Тёмная Сторона Силы протезирует эмоциональную сферу и способна одарить эмоциями даже ИИ"

в Расширенной безэмоциональных ситхов (разного толка) хватало