How big do you think your anon set is on Bitcoin? It's not every Bitcoiner. It's only as large as your coinjoin peers. And only a tiny fraction of Bitcoiners coinjoin much less every transaction.

Every Monero transactions is a "coinjoin". And Monero stealth address receiver anon set is literally EVERY MONERO USER THAT HAS EVER EXISTED.

You are the one with the tiny anon set.