I mean yeah this ain't really too surprising to me. Since I took interest in bitcoin and signed up on some websites and stuff - or maybe its just due to my search data being used/sold in a particular way, I found myself getting more and more spam emails that were related to crypto in some way or the other. Invest in this, buy that, click here to get x BTC! I mean its obvious that this is going to happen - specially with a decentralized currency like BTC - which people still know pretty less about and aren't completely aware of how it works. Hell, you see these kind of scams with fiat/netbanking transactions - ofc its going to happen for crypto aswell.
But I'm afraid that NFTs have actually made this worse than it ever needed to be, and ofcourse the ICO for shitcoins - which people blindly invest in without looking into their history and then the project just up and vanishes. Its pretty much our duty to educate others/who are new to crypto about these to make them less gullible to these scams.