A fool and their money are soon parted.
The first rule that I follow: Don't buy anything that you don't understand. When it comes to Bitcoin, I get it. Steem? I get it. Ripple and Stellar? I get those too. Ethereum? I used to get it, but not so much anymore given the fruit that it has produced.
If there's a chance that Hex is a scam, then it probably is. It reminds me a lot of bitConnect, but with soundbytes and catch phrases thrown into its selling points to make it sound legit.