This statement does not declare that Delta’s origins were a lab leak, since late 2021 is a year after Delta was first detected in late 2020. Can’t have your origins in the future until time travel is invented.
Seems therefore more proper to interpret the statement exactly as written rather than add additional conspiratorial inferences.
The only useful application of crypto/blockchain tech I've ever seen simply takes advantage of the transparent ledger as a way of tracking receipts.
One of the perfect applications is in shipping and logistics where receipt validation, transparency, and certification, is an essential part of the business.