Why can these coins trap retail investors?

Mainly because they initially rise too sharply, attracting the greed of retail investors. As soon as they see the price surge, retail investors rush to follow the trend, thinking they can make some profit. As a result, when big investors withdraw their funds, the price plummets, and retail investors become the "bag holders".

Taking PNUT as an example, the project itself is not large, and liquidity is poor. When the price rises, retail investors rush in. During the pullback, no one is there to buy, and retail investors can only watch helplessly as they're stuck.

BOME gained popularity due to speculation for a while, but once the hype faded, funds flowed out quickly, leaving retail investors abandoned at a high point.

NEIRO has a big speculative concept, but lacks practical application, leading to a price crash and retail investors getting stuck.

ACT is the same; it attracted retail investors early on, but when big investors sold off, the follow-up funds dried up, and retail investors got trapped.