I think you should read the tyranny of F/OSS -- There are some interesting opinions in there -- having no structure does not always work out like you would think, secret social structures still get created.
Yeah I'm kind of worried that in reality, though there isn't a 'structure' it will devolve into something worse than high school girls trying to get dates for prom
And the scale they're doing it on is also alarming, but I'm relatively new to the startup scene, so maybe I'm wrong
ALSO - They should look at the problems that Valve has had in the past with a "flat" structure
There are still 4 owners, just like before the changes. Still all the decisions about the company are made within tho whole team. Shareholders do not have any more decision power than the others.
Of course the social structure will evolve, however we're not afraid of 'secret social structures' as the company is fully transparent and we all have similar mindset.
For 3 years we've been all working remotely from our homes - I can imagine, that during this time, any 'secret structures' would have already appeared.
Even worker coops have a CEO and management its just that all the employes are the share holders which is a bit more manageable at scale.