I think this site is either satire, or serious but with a certain kind of humor in which both they and the reader know they're lying (but it's in everyone's interest to play along).

They do say this:

> Is this legal? / our clean room process is based on well-established legal precedent. The robots performing reconstruction have provably never accessed the original source code. We maintain detailed audit logs that definitely exist and are available upon request to courts in select jurisdictions.

Unless they're rejecting almost all of open source packages submitted by the customer, due to those packages being in the training set of the foundation model that they use, this is really the opposite of cleanroom.