Any of the many scripts in the Resources area that handle backing up the config would be infinitely better for this purpose than having to deal with TrueCommand. But far better yet would be doing something useful with the backups you've already been making for the past ten years.
We're Ok with using other backup scripts. You can backup to your laptop or wherever.
If a user thinks their config is backed up on the system.. and then finds it isn't, that's a problem. Snapshots are not a backup. We only want to encourage safe processes.
TrueNAS does keep the config backups, but only for emergencies... and we don't recommend users rely on them since they can be wiped with a command or a hardware failure. This is the recommendation for CORE and SCALE.