They weren’t talking about using linux, they meant installing it. They were referring to downloading a disk image, writing it to a flashdrive such that it’s bootable, making sure your bios is set to let you boot from removable media, pressing the right key for your device to select the boot media, picking the flash drive, and then navigating the installation interface.

There are definitely places where I see folks getting stuck in that process if they’re not a technical user and/or familiar with linux