@Cenbe Security support ends in 2026. All Linux phones except for PostmarketOS, which doesn't have full support for the Pixel 6, rely on libhybris, which is effectively a shim library.
This means it allows you to install base Linux on Android drivers. Since they will no longer get updates, in October, you will be running an updated userspace and potentially vulnerable kernel space. If you're okay with that, Ubuntu Touch is still the furthest ahead of the pack but doesn't fully support the Pixel 6.