It may seem convenient to have a fallback option, and the reasoning behind the vulnerabilities is understandable. However, the reality is that Optimism's permissionless fraud proofs were disabled on the OP Mainnet just two months after going live. The engineering reality doesn't align with the marketing claims, which can be misleading for non-technical users. So please do elaborate such _conditional_ stage-whatever-milestones in the comms properly. https://gov.optimism.io/t/upgrade-proposal-10-granite-network-upgrade/8733

𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐨𝐧 𝐰𝐡𝐚𝐭'𝐬 𝐧𝐞𝐱𝐭.

https://github.com/pcaversaccio

So they are currently not permissionless? I usually check l2 beat and it has them at stage 1