China 08 were obviously a very talented team who were able to put it together at the right time, and were dominant in the end. That's hugely significant. We knew that at the time, and it's become all the more so given the events of the last decade. Plus they could actually vault!
However,
@MaryClare is right that the fake DOBs will always hang over them, always be an asterisk. Which is unfortunate for them, since that was true of Chinese teams that preceded them as well as some from elsewhere too. But that's what happens when you do it in the internet age.
Worth pointing out that the Beijing team had much weaker competition than 90s and Sydney Chinese teams. Marta sabotaged her own team with stupidity, Romania had been neutered by the open ended code and Russia Russia'd. Compare that to Atlanta and Sydney, it's night and day. You can only beat what's in front of you, but there wasn't that much in front of the Beijing team, in the end.
I don't think the Atlanta team design gets enough credit for being history makers on the wider gymnternet either. They were the first team who had been put together for a non-AA format. China were trailblazers there. It didn't work, but you can see the agile thinking in a way that's not the case with the teams who beat them.