I disagree on one hand Threepio being built by Anakin stretches canon to its breaking point. On the other its funny that Anakin become Vader more machine than man and Threepio is very human like, a robot he built. Just like even though it breaks canon Vader being born at the same time Padme dies is a very powerful visual. Its like Lucas was being too clever.

But i don’t buy the poetry it rhymes stuff. Or whatever some fan created online to describe the movies. There is visual symmetry and continuity, almost accidentally at times due to Lucas recycling ideas. But the most interesting aspect to me would have been Luke and Anakin having similar journey’s that ended up in a different place. Lucas failed in executing that. Anakin’s turn and his friendship with Obi-Wan are completely bungled, rushed or skipped over. The Opera scene was interesting, that is a seduction to power and evil. But the whole join the dark side to save Padme doesn’t work. Not sure what other answer to Anakin’s turn Lucas could have done. But it should have been like what was described in the OT, and the Return of the Jedi novelization.