Yet the paper you reply to is written in sep 2019 and states that the Chinese market is still a massive influence. Don't you think that outweighs your tweet from 2018 from some guy?
The tweet is from this month. The NG article is from 2018, but the WWF article postdates the Nature article.
Ivory powder is used in Traditional Chinese Medicine (TCM), so it's more likely than not that China won't stop killing elephants (or rhinos.) Additionally, exotic TCM ingredients are considered to be a status symbol, so price is no object.
In addition, there's a new development. The CCP is intruding into Asian and African countries using Belt and Road Initiative (BRI) as a pretext, and even positioning armies there. This could well accelerate poaching.
I think you mean well, but consider the source of your information before being argumentative.