But we have an idea that someone can have as much as wallets as he can and if that's part of the basis then there's already inaccuracy already. Well, we know that there really are millions of people that are aware of crypto but we just don't know the exact number.
i am more on this opinion. it is just an approximate number because up until now it is hard to get those numbers accurately. but it is showing that we are growing though as you said, one can have many wallets so long they want to create one. so this part, is actually the reason why we can't get the right numbers here.