Nice of you to highlight this post and provide some of your thoughts!
First, a bit of a correction -- Greymass is an organization with @jesta, but also myself and a few others. This article was actually written by me. :)

It's cool that you've linked back into the Worker proposals newly created here on Steem. Indeed, it's something I was a big proponent of, partially due to this reason.

Interestingly, Steem doesn't really hold the same problem that EOS (and other DPoS systems) has, due to the rewards pool. Since the inflation has a much broader distribution, and the witnesses only gain a portion of it, the convergence is not nearly as much of a problem (i.e., they are unable to achieve collusion / byzantine fault without performing active market participation / buying tokens from others).

The worker proposal system just makes things even better in my mind. I'm less concerned about even having witnesses dip from this pool -- so long as their goal is to sell the tokens to achieve financing of the project. Selling the entirety of the rewards to the market alleviates the problem, as I somewhat point this out in the update at the bottom of the post. Though, it should be in entirety.

EOS doesn't have any other source of inflation, and their governance has already seen accelerated centralization. I believe one of the reasons of this is a form of the effect I wrote about.