That looks just like the preform for an injection blow molded bottle. I know the blow molding process leaves residual stresses but it seems like the dishwasher thermal/aqueous environment unlocked the molded part and it reverted to its old form. Cool if so.
The thing that drives me nuts are sources like the Huffington Post including links to that platform, driving traffic there. Screenshots would be an improvement.
Comments
Asking to avoid the same problem of course
"I can't"
"What do you mean 'I can't'?"
"My water bottle deflated"