Singaporean blogger Xiaxue – whose real name is Cheng Wendy – launched an attack on the Swedish student and called climate activists "star-eyed idiots." Xiaxue, 35, attacked Thunberg after giving a passionate speech at UN headquarters in New York.
Thunberg told the assembly that delegates "stole" their dreams and childhood "with their empty words."
The Swedish activist said: “We are in mass extinction. And all you can talk about is money and fairy tales of eternal economic growth. How do you dare."
But Xiaxue accused Thunberg of being one of those "young people so in love with issues they see so one-dimensional".
She said, “And who cares what kids seriously think. When I was a kid, I was an idiot and all these kids are star-eyed idiots who say simplistic things like why can't we just not have wars.
"Seriously, I'm ashamed of her secondhand, how she's … crying. What for ah? Will climate change stop because of her crying? Let me know."
But critics were quick to call their remarks.
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Another person posted: "Greta T is a conservation icon, she's keeping the relevant xiaxue."
One added: “This is disgusting. What's wrong with hopeful teens? If she has this kind of consciousness at an early age, who can say she can't change the world when she's older?
"All you need to do is start with hope."
But indifferently, the Instagram influencer responded by saying, “That crying girl is scared and nothing you say can change my mind…
"You will preach to anyone who will listen, and I will keep thinking that you are very dramatic and brainwashed."
Addressing her critics directly, she added, "You're a lazy and a hypocrite.
"You worry about the Earth plant, do your part … but hey, as long as it's not an inconvenience, right?
"What is the minimum amount to make before someone is not considered an idiot?
“Not using straws? Aren't you supporting Greta when she's crying? 'Cause you know, I can pretend to agree with her, go over her ass and say, "Listen, listen, she's so brave." just like any other influencer out there. ”(Sic)