My claim is that making it more private/anonymous would make it more difficult to audit the supply. Didn’t say it was impossible. I don’t know if it’s even practical to do.

So you want me to prove to you that an open and transparent base layer is easier to audit than a private/anonymous base layer?

I think liquid and monero are good examples of this. When you look at liquid or monero transactions on their respective blockchains, you can’t see how many coins are going where and confirm that no new coins were created out of thin air.