I myself hate videos of autistic meltdowns - as people having them are at their most vulnerable in this stage making videos of them seems very exploitative to me, especially as they may not be able to consent to being put online.
Banning them may be difficult, though. I am aware that meltdown videos are usually not uploaded with bad intentions (though they may attract bad attention!) I can see why they are uploaded - some parents of autistic people think that by uploading meltdown videos, they are simply spreading awareness of how autism can manifest and affect someone. But I don't think it's the right thing.
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I'm sailing across Spectrum Sea, in my little boat.
The waters of the port were choppy. After I set off, there was a long, massive storm.
Years later, however, the sea calmed. I'm still on tranquil sea, but I'll never reach the Neurotypical Beach.