I love you, and because I do, I will tell you that all of them are wrong.
Yes, analog synths drift over time... which is to say that they eventually go out of tune. But that aspect of them has nothing to do with their tone; it is just a sad truth. The important thing about analog synths is that the frequenchy of their waveforms varies from wave to wave. There is a "jitter" to waveform frequency... and it's an important aspect of analog tone.

This video is about that.

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