This sort of response, I'm afraid, is why we can't have nice things.
The author has taken the time to make their code available and make it as free as possible to reuse. Why should they have to spare a second thought for the roadblocks your organisation chooses to put in the way of you using it? There are better uses for a developer's time and personally I'd much rather see another great write-up like this than a carefully chosen open source license on the sample code.
Sure, but it doesn't hurt to mention it because I'd even MORE rather have both the writeup (98% of the value) AND the well-licensed code (<2% of the value).
The author has taken the time to make their code available and make it as free as possible to reuse. Why should they have to spare a second thought for the roadblocks your organisation chooses to put in the way of you using it? There are better uses for a developer's time and personally I'd much rather see another great write-up like this than a carefully chosen open source license on the sample code.