Elephants are definitely NOT in zero danger. Certain species of Rhino are definitely virtually extinct (for example, there are only three known remaining specimen of the Northern white rhino https://en.wikipedia.org/wiki/Northern_white_rhinoceros) but elephants are in a pretty bad shape too. If the next 10 years are as bad as the last 10, they will be virtually extinct in the wild.
Furthermore, IIRC, the biggest consumer of illegal rhino horn isn't China but Vietnam.
Even though some of these are technically reserves, some of them are pretty large
https://en.wikipedia.org/wiki/Tsavo_East_National_Park is 13,747 km2/5,308 sq mi.
The park rangers have only a rough idea of how many elephants live in the reserve.
From a policy perspective, bans often don't work because they induce a "forbidden fruit" effect [2]. Or, in the words of Walter Lippmann [3]:
"We find ourselves revolving in a circle of impotence in which we outlaw intolerantly the satisfaction of certain persistent human desires and then tolerate what we have prohibited. Thus we find ourselves accepting in their lawless forms the very things which in lawful form we repudiate, having in the end to deal not only with all the vices we intended to abolish but with the additional dangers which arise from having turned over their exploitation to the underworld."
It is especially strange seeing wildlife policy push further towards a "war on drugs" stance at the same time that many are claiming that war has been lost [4].
It will be interesting to see how things play out, but I believe policy in this area is fundamentally flawed and will remain so for the foreseeable future. Hopefully, the animals will survive our blundering.
[1] https://wildlifejustice.org/cn/overlooked-rhino-horn-demand-...
[2] http://www.independent.org/publications/tir/article.asp?a=33...
[3] http://www.unz.org/Pub/Forum-1931feb-00065
[4] https://www.weforum.org/agenda/2016/11/war-on-drugs-legaliza...
How about banning any and all animal products involved in the quackery "medicine" trade or ludicrous edible "delicacy" which are the driving force behind the problem to begin with?