https://cointelegraph.com/news/monero-transactions-japanese-authorities-arrest-18-scammers

First they gotta get you to buy or sell from/to them. So they gotta have something worth your time. Let's see if they can do it.

If that retard had access to an xpub of yours maybe ?

Definitely easier than Monero

Any person you transact with can at least see partial balances. They can also follow what you do with that money going forward unless you coinjoin before and after every single transaction. Doubt you do.

I will try just for fun

I have something better: I will give you my Monero address and you will give me the receiver and the amount

852ZoFKMS5uJC6529aV8em9czbQg4R5KGN41KnRRs8t95A3Jxbg8nuqPveyXsDpAXxMMZypJ4hZwHhqENmWhgEgx8qj3XH4

I didn't coinjoin or anything special, I just receive an address to send money and I sent. As simple as that 😉