Yes, a NFT holder has full control over growing their data rewards or not growing their data rewards.  You can toggle the switch between “growing” and “not growing” your data rewards.  This will result in the funds automatically going into the available balance if you are not growing or into the NFT floor price if you are growing the rewards. You can switch between these functions whenever you like.  


Note: On purchase, the system will automatically set data rewards to “growing” if you wish to withdraw your rewards instead of grow your NFT, you need to go to each NFT account and toggle to “not growing”