What ‘good’ was he actually trying to do? Padme was in no actual danger, he just had dreams about her dying. A desire to force someone to live beyond their natural life through any possible means and despite all negative consequences is not ‘good’. There is no universe where murdering dozens of children is ok because he might be able to save his wife from something bad that might happen to her at some future point.
You literally just rephrased exactly what they just said. Who do you think the ‘third of us who learn and try to repeat it but better’ was talking about?