Good observation, Johnny!
” If I understand correctly, even citta is quantized. So, can I safely assume that there is nothing in this world that is truly analog in nature?”
Not only citta, but “matter” is quantized too. The smallest unit of matter is a suddhāṭṭhaka. See, “The Origin of Matter – Suddhāṭṭhaka.”
We can safely say that the Buddha was the first scientist to point out the “quantum nature.”