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YouTube is now fully blocking ad blockers around the world
(9to5google.com)
This is a most excellent place for technology news and articles.
They can use the code directly. The license allows "review, compilation and non-commercial distribution".
It doesn't explicitly allow modification, but they do define "code" as "the code and any part of it and any derivative of it", so clearly derivatives are expected.
You "can" use the code directly.
But if you don't you're not bound by their license and can foss your work.