"The purpose of this new variation is help eliminate some of the risk involved with traditional staking by removing the need for your coins to be locked up. Instead, the KuCoin soft staking option will allow users to access their staked coins as and when they please. Describing the new service as offering a “low-risk, passive profit generation from staking, while maintaining full control of your tokens.”" - https://www.cryptimi.com/news/kucoin-reveal-new-soft-staking-option/
Everybody is welcome to join and be part of soft staking program of KuCoin that is why i am sharing this article with you to clear things up and make some rewards out of it.