Here is a summary of the thread items created using GPT-4 that I placed in the subreddit to help people get a clear answer without having to dig. I want to thank all those who responded. :)
A thread discusses the security impact of severe baseband vulnerabilities with Exynos on GrapheneOS. Users are concerned about the potential risks to their devices, especially Pixel 6 and 7, and inquire about effective mitigation features in GrapheneOS.
GrapheneOS developers clarify that the cellular modem is isolated with or without GrapheneOS, and the OS improves kernel and userspace security to better protect devices from potential compromise via the cellular modem. GrapheneOS has also implemented an LTE-only mode for attack surface reduction, although it might not completely avoid all vulnerabilities. The developers suggest that avoiding VoWiFi and VoLTE can help mitigate some risks.
Users suggest improvements, such as notifications for unpatched zero-days, but the developers point out that vulnerabilities are an ongoing issue and the best solution is to use devices with quick updates and not EOL (end-of-life)._