Of course not but many people seem to need a G word and a massive CPU could be treated, by many people, as one. Polytheism treats pretty much everything as a potential G word.I wouldn’t call a CPU a G-word. Would you?
I'd invert that and say that a brain can be regarded as a CPU (unspecified spec). Nervous systems of all levels exist and have a lot in common. If a nematode worm can be characterised in terms of logical functions then why not our own brains?You seem to be implying that a CPU is a brain
The philosophical question of a brain analysing itself is a difficult one if one feels there has to be an answer. Personally, I feel no shame in saying that the question is too hard for me (along with a lot of Science and Culture). Reaching for a magic word to take care of all that is one way of dealing with it.