Gabby was was strangled to death in Wyoming's Bridger-Teton National Forest, a coroner confirmed on Tuesday.
Her Long Island family lost communication with her in late August while she was on the "van life" road trip out West with Laundrie.
The couple's complicated relationship - with reports of abuse from and by both parties - has made the social media conversation about them heated.
Specific groups are particularly supportive of Laundrie. Corners of the manosphere - an internet subculture dedicated to men's rights and misogyny - call for people to defend him.
The FriendsOfBrian subreddit, created for satirical jokes at "support" for Laundrie, has many posts advocating for him. One follower wrote: "The funny thing is if you simply reversed the genders in this case then everyone would be defending Gabby as having acted in self-defense from an abusive boyfriend.
"She would also not spend a single day in jail and would be called upon to give speeches at DV abuse conferences about "how to fight back against your abuser."
The poster refers to women as "bloodthirsty, vengeful Feminist SIMP mobs of self-entitled Narcissistic KARENS."
The manosphere is accused of inspiring Jake Davison, the shooter who killed five people and himself in Plymouth, south England, and Elliot Roger, who committed the Isla Vista mass shooting in 2014, at a Sorority House at the University of California, Santa Barbara.
Before he went on his killing spree, Roger released a video and a written manifesto hitting out at women for not sleeping with him, saying "you girls have never been attracted to me. I don't know why you girls aren't attracted to me, but I will punish you all for it."
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I was shocked when I saw some real nasty MF on HG Tudor's site claiming that Petito was "the narcissist". I mean, the dude had to be so small and bitter and squished in to the ground it was disgusting. Anyway. I made my opinion known right away that he was FOS. Tudor came out about a week later and said any claim that Petito was a narcissist was absolute bullocks. He's one to know.
Anyway, the incels (not the 95% of men that certain unnamed women on GaG claim are incels - the ones they are not attracted to) ... the real actual incels hide out on Taylor the Fiend's discord. Some of the worst openly racist, misogynist, pepe the frog propping MFs out there. And I should know cuz I grew up in the repulsive end of the American Apartheid Gothic South. "As I Lay Dying" was written as a joke about my own family.
I don't put it past a bunch of these wads to try to keep that Laundry guy under ground. Look what they did with Rittenhouse. This is the sick end of Amerika. Frankly speaking they're too dumb to keep it up forever. Even if the FBI and law enforcement are in on it. The case is too big at this point and someone is gonna make their career on it.
So we'll see, won't we?
Just stopping in to say this is a stupid post. Given the depth of nonsense in this post, it is clear you should understand humans are all complex individuals, greatly diverse based on their upbringings and experiences, thinking we can understand and generalize anyone is naive and makes you look like a bigot, be humble.