However what does concern me is that when looking at some of the new accounts, its obvious they are sudo names, many are scammers and bots. Some of which were set up by Steemit Inc. If I can spot these, why is steemit inc allowing them be set up??

I have been wondering this for months @paulag. I don't have your statistical nouse but so many of these spam accounts are so blatantly obvious that even I can see what they are.

They frequently only post plagiarised photos with no text, they follow thousand of people when they're very new and their names are often obvious.

May of these accounts are created in blocks of ten and have sequential numbers, like these I saw yesterday:

address100
address101
address102
address103
address104
address105
address106
address107
address108
address109

So even before they get to the posting stage it should be easy to spot them.

Like you, I just don't get why Steemit inc is allowing them to be set up.

Hopefully, the lower number of new accounts and the improved other stats means the creation of these spam accounts is slowing down.