A word of warning, as I see conflict on the horizon. Consider the incentives around why one would want to improve the Bitcoin protocol. The only reason you'd care about doing so is if you are a direct user of the protocol. In other words, protocol improvements are only interesting to those who self custody. If you use a trusted third party to store your funds, you don't care how they make use of the protocol.
I agree with this part of the article. Who cares about protocol, the number of nodes or centralization if they leave their belongings laying around? Only if you want to hodl your own belongings would you care about all these details. It seems to me that even large hedge funds are leaving their belongings laying around on the platforms, lately. Personally, I want my BTC in my own sweaty hands!!!!