Having been a FreeBSD (and BSD in general) user since the 2.x days and managed a small fleet of servers since the heady 4.x days (including a few Sun UltraSPARC II and IIi servers and dealing with the ATA problems), I've been rooting for FreeNAS and TrueNAS CORE for a long time.
It's kind of disheartening to have seen support for FreeBSD from hardware, software and cloud vendors fade away. I knew that when TrueNAS SCALE was going to be based on Linux that it'll eventually lead to CORE getting sunsetted.
I do have to say that I am a bit of a hypocrit in that I migrated from CORE to SCALE on my TrueNAS Mini X+ and only have one server running FreeBSD (even though the cloud provider no longer provides support).