Yes, Monero is opaque verifiability that rests on well known and thoroughly tested multi-decades old cryptographic assumptions.

But using this as an argument against it is weak if you are not taking advantage of Bitcoin's transparency by manually auditing the supply yourself. Otherwise, what is the point of talking about transparency if you are just trusting your node (exactly as any monero node) and not taking advantage of it? No Bitcoiners do this. Potential supply bugs exist with both. https://www.coindesk.com/markets/2018/09/21/the-latest-bitcoin-bug-was-so-bad-developers-kept-its-full-details-a-secret/

L2 layers will always sacrifice core value props. Liquid, Fedimints, Lightning, Sidechains all trade away custody, final settlement, and/or decentralization. So it is still not a Monero replacement even if their mediocre privacy was improved.