Steemit creates accounts for scammers... and nobody else?

What is wrong with account creation?
A day doesn't go by I don't hear a complaint about how slow it is to create a new account via the Steemit account creation process. An account can take anywhere from a few hours to weeks, and sometimes never.

This is a big hurdle for Steemit to grow and I know this is a big focus for Hard Fork 20 (aka hf20) but why is it so easy for spammers to sign up via the Steemit faucet?

Account creation is no problem for spammers
The problem only exists for legitimate users, as spammers have no problems making thousands of accounts on a daily basis.

Enter the Zhiyin network
There is currently 80 accounts for zhiyin all created through the Steemit account creation process. From @zhiyin1 to @zhiyin80 for a total of 1,200 STEEM Power delegated by Steemit Inc.

This doesn't sound like a lot of STEEM power but this is free and it isn't the only accounts in their network. There are many more. There is one network with over 20,000 accounts.

50 Accounts approved in a single day

Another 30 accounts approved 12 days ago

user date creator
zhiyin9 3/17/2018 12:00:33 PM steem
zhiyin80 3/27/2018 6:35:33 AM steem
zhiyin8 3/17/2018 11:58:21 AM steem
zhiyin79 3/27/2018 6:36:09 AM steem
zhiyin78 3/27/2018 6:36:48 AM steem
zhiyin77 3/27/2018 6:37:24 AM steem
zhiyin76 3/27/2018 6:38:03 AM steem
zhiyin75 3/27/2018 6:38:39 AM steem
zhiyin74 3/27/2018 6:39:15 AM steem
zhiyin73 3/27/2018 6:39:48 AM steem
zhiyin72 3/27/2018 6:40:21 AM steem
zhiyin71 3/27/2018 6:41:00 AM steem
zhiyin70 3/27/2018 6:41:39 AM steem
zhiyin7 3/17/2018 11:57:21 AM steem
zhiyin69 3/27/2018 6:42:24 AM steem
zhiyin68 3/27/2018 6:43:03 AM steem
zhiyin67 3/27/2018 6:43:57 AM steem
zhiyin66 3/27/2018 6:46:24 AM steem
zhiyin65 3/27/2018 6:47:09 AM steem
zhiyin64 3/27/2018 6:48:00 AM steem
zhiyin63 3/27/2018 6:48:39 AM steem
zhiyin62 3/27/2018 6:51:09 AM steem
zhiyin61 3/27/2018 6:49:39 AM steem
zhiyin60 3/27/2018 6:51:51 AM steem
zhiyin6 3/17/2018 11:55:54 AM steem
zhiyin59 3/27/2018 6:52:48 AM steem
zhiyin58 3/27/2018 6:53:24 AM steem
zhiyin57 3/27/2018 6:54:03 AM steem
zhiyin56 3/27/2018 6:54:42 AM steem
zhiyin55 3/27/2018 6:55:15 AM steem
zhiyin54 3/27/2018 6:55:48 AM steem
zhiyin53 3/27/2018 6:56:21 AM steem
zhiyin52 3/27/2018 6:56:57 AM steem
zhiyin51 3/17/2018 1:05:18 PM steem
zhiyin50 3/17/2018 1:08:36 PM steem
zhiyin5 3/17/2018 11:54:39 AM steem
zhiyin49 3/17/2018 1:07:36 PM steem
zhiyin48 3/17/2018 1:06:36 PM steem
zhiyin44 3/17/2018 1:00:42 PM steem
zhiyin43 3/17/2018 12:59:27 PM steem
zhiyin42 3/17/2018 12:56:45 PM steem
zhiyin41 3/17/2018 12:55:45 PM steem
zhiyin40 3/17/2018 12:54:48 PM steem
zhiyin4 3/17/2018 11:53:24 AM steem
zhiyin39 3/17/2018 12:53:39 PM steem
zhiyin38 3/17/2018 12:52:36 PM steem
zhiyin36 3/17/2018 12:44:57 PM steem
zhiyin35 3/17/2018 12:43:18 PM steem
zhiyin33 3/17/2018 12:38:39 PM steem
zhiyin32 3/17/2018 12:37:33 PM steem
zhiyin30 3/17/2018 12:33:21 PM steem
zhiyin3 3/17/2018 11:52:09 AM steem
zhiyin29 3/17/2018 12:32:18 PM steem
zhiyin28 3/17/2018 12:31:24 PM steem
zhiyin27 3/17/2018 12:30:21 PM steem
zhiyin26 3/17/2018 12:27:42 PM steem
zhiyin25 3/17/2018 12:26:51 PM steem
zhiyin24 3/17/2018 12:25:54 PM steem
zhiyin23 3/17/2018 12:24:54 PM steem
zhiyin22 3/17/2018 12:22:24 PM steem
zhiyin21 3/17/2018 12:20:24 PM steem
zhiyin20 3/17/2018 12:19:27 PM steem
zhiyin2 3/17/2018 11:51:03 AM steem
zhiyin19 3/17/2018 11:54:09 AM steem
zhiyin17 3/17/2018 11:52:12 AM steem
zhiyin16 3/17/2018 11:51:09 AM steem
zhiyin15 3/17/2018 11:48:30 AM steem
zhiyin14 3/17/2018 11:49:57 AM steem
zhiyin13 3/17/2018 12:06:03 PM steem
zhiyin12 3/17/2018 12:04:21 PM steem
zhiyin116 3/17/2018 12:15:42 PM steem
zhiyin115 3/17/2018 12:14:21 PM steem
zhiyin114 3/17/2018 12:11:18 PM steem
zhiyin11 3/17/2018 12:03:06 PM steem
zhiyin10 3/17/2018 12:01:54 PM steem
zhiyin1 3/17/2018 11:49:45 AM steem
What do they do?
What you think?

Surely this is an exception, and just an oversight?
user date creator
ankle5 3/26/2018 12:11:09 PM steem
ankle4 3/26/2018 12:12:21 PM steem
ankle3 3/26/2018 12:13:12 PM steem
ankle2 3/26/2018 12:14:00 PM steem
ankle1 3/26/2018 12:14:57 PM

.... -.-.-..-.-.-..--..-.-.-.-.-.-.,-.-..-.-.-.-.-.-.-..-.-.-

Why is it so easy for spammers to create mass accounts, but so difficult for legitimate users to get a single account?
How are these mass accounts getting approved so efficiently?