Staking confusion on guarda

I've recently looked into staking on the guarda wallet, and some of the promises they make seem too good to be true. In a comment on their YouTube channel, they say that once ethereum 2.0 launches, users will get all of the ETH they staked deposited back into their account along with rewards, but they will also not take back any of the GETH tokens they offer when you deposit ETH to stake, and that you'll be able to swap the GETH for ETH in a 1:1 ratio. This screams free double your money scam, so where's the catch?

Comment made by guarda wallet is on this video: https://youtu.be/-ycS5Vwbmxw