Ironically, I think Arch might be a better first time distro than CachyOS, because if you’re willing to go through the manual installation process and learn from all the fuckups you’ll make, you can come out of it with the knowledge necessary to manage your install. Though of course I would only recommend it with the warning that your system will be mostly broken for a while and you’d be constantly figuring out and fixing things, so not a good idea if you need your computer working.
But it does seem like a nice distro for if you already know what you’re doing and want to save time getting things set up (and maybe those performance improvements are significant enough, I’ve seen people give big figures)
Despite having Table in the name, FAT isn’t a table, but rather uses a table, and FAT itself is a filesystem. Thus, it’s different from a machine with “machine” being in the name or a number with “number” in the name, and it seems entirely reasonable to refer to the crucial index table in the FAT filesystem as the “FAT table”