So from my perspective their is no tool's i can mention that have the valuable statistics of wallets, except a research will be carry on any moment from now.
No one that has the basic knowledge of how bitcoin wallet works that will want to make research about what can never be attained. Anyone that says his research is accurate about the total bitcoin wallet is definitely wrong. This area of wallet is not an area that can be researched.
The only reason why the number of users grew is because the number of bitcoins has been growing in total and a small percentage is going to this terrible service.
This is a very common wallet is my country (or to be accurate let me use 'in my area'). It is commonly used by novice or newbies while the novice is telling his friend that is also novice to also use blockchain.com wallet even when only legacy type of address was only supported. These people in my area do not even know if bitcoin addresses are of different types and neither have they heard of any hack before maybe. I checked google play store, the wallet has 10+ million download just like others common ones like the custodial Coinbase and the likes.