These stats are really great! Especially the developer activity and WASM performance. But I would like to push back on one thing. Nakamoto Coefficient may be an insufficient metric for determining Polkadot decentralization.
The reason has to do with an element of Polkadot staking rewards Kian pointed out at the Cambridge 2022 Academy. Polkadot hard caps the rewards to be garnered by any single validator, thus incentivizing single entities such as exchanges to run many validators rather than a single heavily staked one. This may result in validator clusters which create centralization the Nakamoto Coefficient doesn’t account for.
I would be very interested to see how Polkadot decentralization stacks up against other protocols with some “Nakamoto Coefficient 2.0” metric that tracks the number of validator clusters that must agree to interfere with a blockchain. I realize that would be a much harder stat to get an objective read on. For the record, it’s awesome that Polkadot does so well with the vanilla Nakamoto Coefficient!