SNIP
Answering the title.
Unfortunately, people come to the cypto trading watching those shitcoin trading ads on social media. I still see some ads like someone is trading in front of their computer and a shitcoin faced meme comeup and encourage them to open bigger positions. I think a lot of people saw such ads on Facebook and Instagram. These shitcoin owners create those ads and run it on social media.
I believe people come to crypto trading seeing these ads. Most of the shitcoins lose it's value within a few weeks because once the developer see that people are buying the tokens, they start dumping their allocation on the market.