I literally don’t understand your issue with QNAP hardware, it sounds like your issue is TrueNAS, the only thing I did to change the OS from QuTS to OMV was install an NVME driver and select an USB drive with new OS at the boot menu. No drivers, no dev mode, no nothing. The cheapest option at TrueNAS is +1100$, I’m not paying that when my minimum requirements were a low TDP CPU with HW encoding and a chasis with 4 disks.