The variable is the name of that version of Linux, the version being the still unreleased Linux 5.17-rc2. Basically, he's naming the release the "I am Satoshi"

The variable is the name of that version of Linux, the version being the still unreleased Linux 5.17-rc2. Basically, he's naming the release the "I am Satoshi" release. The previous one was "Gobble Gobble".