Many projects may look risky, but Bitcoin Interest looks safe. I think that you still need to read more about this project if you invest in it
And you say this on what basis exactly? There have been around 10 forks of BTC at this point and only one Bcash survived anything, rest all trashed out
I think what he want to point out is it will be safe since there's no need for you to risk coin or to invest in any project. All you have to do to earn the forked coin is to park your btc on the supported exchange and wallets.