If it is satire, it's quite subtle and well done. It references the old reasons why "Agile" was invented (current software development processes being bureaucratic and meeting-intensive, the new one will be lightweight and engineer-led).
If it is not satire, the juxtaposition is striking.
Example: https://github.com/ImperialCollegeLondon/FLT/blob/main/FLT/M...
Also check out the blueprint, which describes the overall structure of the code:
https://imperialcollegelondon.github.io/FLT/blueprint/
I'm very much an outside observer, but it is super interesting to see what Lean code looks like and how people contribute to it. Great thing is that there's no need for unittests (or, in some sense, the final proof statement is the unittest) :P