The author seems to be under the impression that changing from a 4-of-7 multisig to DAO control is not an improvement?

> Indeed, as long as a proposal gains more than 50% of the votes with a 1% quorum, it can execute abitrary code on behalf of the DAO - even such code that will give anyone dictatorial control over it in perpetuity.

Of course this is how it works. The DAO can do whatever it wants, and is controlled by the thousands of users who vote using their tokens. This is a huge improvement over a small multisig!