Keep in mind that a part of the filesystem will be reserved on creation. Here if I create a completely empty ext4 filesystem with:
truncate -s 230G /tmp/img
mkfs.ext4 /tmp/img
mount /tmp/img /mnt
Dolphin reports "213.8 GiB free of 225.3 GiB (5% used)"
If you're one of those people that think every product is better if there's "AI" on the box then sure. What you're describing is static analysis though, it is not new.