Seed phrase in youtube comments scam?

So as you guys know most crypto youtube comments are full of scams but I've noticed a few comments written with something along the lines of "I want to transfer my money blah blah my seed phrase is" then they list their phrase when I first saw this I thought holy shit what are you doing?

But then I noticed a lot of comments like that to the point of it being clear this is a bait to get people to use this seed phrase so I'm wondering how does this scam work OR are people really this dumb?

Are they hoping you take the wallet fill it up with money then they drain it back??

I just don't understand and would love for someone to explain it to me.