Well, thanks to Kendall, we know that Kourtney isn't necessarily quitting, but that she now has "boundaries".
Kendall admitted that it is "totally understandable... I think I've always kind of not let my personal life entirely on the show, so it's just kinda always been a thing for me. But then with Kourtney, she did at one point let her personal life be on the show, and so now it's more of a shift, I guess, for everyone to understand."
"But no I don't think she's fully confirmed to not be on the show? Let's just say it gets a little bit crazier before it gets any better. And it's just...there's some pretty crazy things that happen," Kendall continued.
That's MUCH better than a blatant exit from the show.
Back in October 2019, Kourtney heavily implied that she'd be stepping back from the show while chatting to ET.
"I just decided to spend more time as a mom and put more of my energy there. But I’m not saying goodbye. But I think you’ll have to see more of it on the new season, season 18. It isn’t airing yet, but it’s being filmed. Currently, in this room."
Kourtney's decision to step back is rumoured to be largely due to the growing tension between her and Kim, which was one of the biggest storylines of season 17.