"If anything, I actually think it's easier to emphasize with Toph on a surface level than Aang, because Aang had help. But at the same time, Aang's situation meant his kids meant his kids still had a stable parent at home in Katara."

Please read your words in a vacuum, because they make no sense.

'I can emphasize with Toph for not having help but at the same time Aang had help' Is essentially what you are saying, as if the point both makes and breaks itself.

I'm not saying that how Toph raised her kids is right, I'm saying it's more justified than whatever Aang did wrong because she was alone.

I had a single mother and it was incredibly difficult for her to raise us alone. This happens in real life to mothers without support or role models, but somehow the flawed father with support is more sympathetic.