if you or any other FP6 official user might confirm: /e/OS ships this official image with adb root disabled, right?
Which error did you see, this one?
Error code: LT_ROOTED_DEVICE: LuxTrust mobile app has stopped working because the configuration of your device may compromise data security
the luxtrust app does lots of device environment probing.
One of these checks goes positive and misattributes it to being rooted. Here’s some grapheneos users complaining and those are definitely unrooted and relocked.