Crypto-Scam and the exponential function

Since several years, I’m interested in crypto-currencies. I’m active in some chat groups on the topic on several platforms, one of them being Telegram. Every once in a while, I get messaged by people with very professional profile-pics, a trustworthy name („Stan“) and a very creative opener („Halo!“[sic!]). The person I am, I usually reply to spam and go with the conversation. Recently, one of those conversations brought up a homepage, where you can supposedly make A LOT of money by automatically investing in crypto currencied and other. But how much is a lot and can that actually be true?