Good points. I haven't read the link but aren't you missing the equation of price economics? Bitcoin is only highly skewed for early miners only if they have held on to their rewards stash.

Atleast what the designer intended/predicted if I remember correctly, is for the reward value over time to be the same. This is of course not backed by mathematical equation of sort. I would way super early mining is more similar to being the first employee of a startup that pays you in equity only.