I'm not convinced that TrueNAS Scale is an improvement. I won't make the case that stability and maturity hamper Scale as a whole, but there are definitely discrepancies for SMB performance and limitations in and the use of Kubernetes really overcomplicates things for home users (not saying that TrueNAS Scale Apps were great). I had a version upgrade of Scale catastrophically fail on one system because the Kubernetes implementation couldn't be reconciled during the upgrade (I had no enterprise support, community support had no input, so I was forced to restart from scratch).
You also need a dedicated OS Drive for TrueNAS, which is reasonable in principle for critical systems, but doesn't always really meet the needs of home users with limited drive bays.