I do agree on signup process to be strict, but it is strict across the board? Singing up through the Steemit website is stirct. But what about using Anonsteem or this new service Steeminvite you? I never used those, so I don't know what process of identification they us.

Then again, when having fake accounts, is not that much of an issue. Service value is not so (or at least shall not so) much be related to the number of accounts, but to the usage of the service, eg active users per day/week/month, active accounts per day/week/month.