The part in "the joke" contains the joke, all of the other sections are not.
Pokemon Sword/Shield was really causing Roku devices to boot until Roku issued a patch as the "background" section details.
The joke was this involved a collision with some signed Roku command and that's the fluke our universe gets over a planet of Justin Timberlake clones. It's not a "2 guys and a priest walk into the bar" type joke, it was on /r/programminghumor after all.