Next one which this post is just simply a side advertisement of https://www.coin.space/ ? lol
Yes there is a tendency that other wallets are made by the same person but that number is still large compared to 8 million then. Because just like before they can create multiple bitcoin addresses, and why not? Bitcoin wallets would have been huge by then if people had made many wallets. And I think the number of crypto currecy users has increased dramatically since the bull run of 2017 to date.