Rug pull scams "pumping up" a new project, nonfungible token (NFT) or coin to get funding. After the scammers get the money, they disappear with it. The coding for these investments prevents people from selling the bitcoin after purchase, so investors are left with a valueless investment.
I don't understand what you meant, sorry.
But if you talk about NFTs, many of them are scams, in fact, that issue has been raised in the past days during their hype. It eventually gave us no hope to stop this kind of market drama as scams spread everywhere. But I hope you don't make it generalized and never include Bitcoin for them. Many investors leave crypto for different reasons whether they got scammed, invested in the wrong projects, or never understand how this works. In other words, they are not comfortable here.