Rick and Morty Confirmed Morty's Birth Is a (Disgusting) Time Paradox

screenrant.com:

While Rick and Morty fans initially believed the franchise would stay clear of time travel, it ultimately turned out the sci-fi comedy is more than happy to tap into the trippy hilarity of messing with time. In fact — in 2019's Rick and Morty Presents: The Flesh Curtains #1 -Morty permanently turns his entire life into a paradox.

Rick's past is still something of a mystery, even as the show has fleshed out his days as a terrorist/freedom fighter against the Galactic Federation and a rebel against the Council of Ricks. Rick's relationship to his family is sketchy given his ability to influence time and hop between realities, but after some fashion he is Morty's biological grandfather. That's what makes it so impossible that Rick only got to start a family in the first place because of Morty's intervention.

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Rick and Morty Presents: The Flesh Curtains (by Lilah Sturges, CJ Cannon, Joshua Perez, and letterer Crank!) tells the story of Rick's former band «The Flesh Curtains» through a documentary viewed by Morty. What Morty does not realize is that he's not watching a recording, but actually witnessing events happen in the past through a wormhole. While eating a revolting alien snack, Morty watches Rick and the band get confronted by their gangster patron, who intends to kill them after a failed concert. The snack makes Morty sick, and he vomits through the wormhole right onto the gangsters, allowing the band to get away. As the band go their separate ways, Rick confesses that he has the urge to start a family and have a grandson someday.

Rick's wish of having a family comes true, but it also creates a nasty time paradox. Morty was born later, but