Agreed it’s not perfect but I think it does give a sold reference. Coinbase is the place that would be doubled counted because of its custodial holding for BlackRock and Fidelity and how some coins the US government moves to sell are sent to Coinbase. 

It even says in that article that it was counting double on some coins depending on who owns them and where they are stored. 

Satosora

Politics_And_Law

Coinbase's Talks With TradFi Firms Pick Up as Crypto Becomes More Bipartisan

Cje95

Well the government number tracks and the general trend also seems correct. Given how we have seen the huge inflows in the ETFs