Maybe they would have deserved some of that hate if they were two white women who were co-opting Megan Thee Stallion's Hot Girl Summer, but it was actually a joke from a 19-year-old boy. He attached a picture of two women he found on Instagram, and nobody bothered to check who sent the tweet before they piled on. And that's how a random photo of a couple of women smiling pleasantly became the target of the internet's pile-on of the week before everyone moved on and found some other strangers to absorb their insults.
Of course, thousands of the jokes made at the pair's expense mentioned another target of bizarrely irrational hatred: "pumpkin spice lattes." No non-alcoholic beverage has ever endured such contempt, and we live in a world where ranch dressing soda exists. It's probably a coincidence that the universally grumbled-about drink is stereotypically most enjoyed by middle-class women, right? It in no way reflects a safe way to bash these women without saying we hate them. You hate a cup of coffee. That's much more reasonable.