Brand new coins fresh off the press with high unlocked liquidity

Outside of having Bitcoin, Eth, and some other mainstays I'm a total newbie.

Stock guy I've followed did a pump and dump (thankfully sold my initial investment when it doubled), but it did get me interested in the meme coins.

Today I went down the rabbit hole of brand new coins, and hunted the ones with high liquidity.

This one had a ton of buyers, not bots (per site) and hit $137k in liquidity... Then about 10 mins ago the liquidity pulled a Kaiser Dose ... Poof, gone.

Are random people actually buying hundreds of dollars worth of a brand new coin just cause it has high liquidity and value gain but hasn't locked liquidity?

There seems to be a silly amount of new coins... Are there other reasons to create a coin, or people just hoping they run up?

Thank you!