It’s a fair bit more than that, but yes in a sense it is RAID if you are using it across more than one drive (as you should). You can use ZFS on a single drive though, so it’s a middle ground situation.
The main thing is to avoid hardware RAID controllers unless you have a really good reason, and that’s generally what most people refer to as RAID. Generally folks are moving to JBOD setups with filesystems like ZFS now though