I once had a "guy" contacted me on Facebook messenger out of the blue (not my friend nor anything, no idea how I got contacted but I suppose he somehow bought the right to write me from the Zuck). He started asking me questions about stock market investments - what I'm invested in. He touted a couple of run-of-the-mill blue chip stocks like Nike, Intel, GE, asked me whether I was invested in crypto. He wasn't genuinely interested in my answers because when I said that I mostly look at French stocks, which I know and understand better he ignored my answer.

Long story short, after he "gained trust" (or so he thought probably) he shared with me his big secret: a one-of-a-kind automatic trading algorithm which was bringing him returns of 15% per WEEK with no effort. He just sat back and pocketed the money.

Quiz: How was that "even objectively scammy trash?" How do you even recognize a scam ?
Answer: when someone comes over and pretends to offer to one or more perfect strangers a unique recipe to make a lot of money from an activity that is not widely known for generating that kind of returns.

Like the "Nigerian Prince wife / banker / attorney" who offers you the $3 000 000 of the deceased Nigerian Prince if only you'll send him $3000 upfront in fees.