All is good until they start to ask for KYC, we are aware, at least I do believe many of us are aware of potential sales going specially on the deep web or even between companies. It's okay when they ask about your name and email as there are many providers out there that will enable you to use some temp mail service for free or simply you go there and open up a new one. Above all you also have websites such as https://www.fakenamegenerator.com/  that will help you to make up new identity if you don't feel creative that day. Thing is regarding KYC that first off you can't trust startup that much for keeping your conditionals safe and specially you can't trust them if they turn out to be the scam and your details end up stolen.