In the UK (and I think the US) the law is based on what the law says not what the law intends. If the meaning is ambiguous or ludicrous or against public policy the Judge can look at what parliament intended, otherwise what it says is the law. EU law is interpreted differently, each statement of law must be considered within the context of the piece of legislation. Therefore, some of the more extreme parts of the GPDR may not be interpreted so strictly when considered within the whole law itself. I am not a law person so maybe I have misunderstood, happy to be corrected.
I have not read the GDPR (as I am waiting for the audiobook or the movie). It occurs to me that Sean Connery could ask a film studio to remove all personal information it holds on him. Therefore the new edition of Dr No is going to be 3 minutes long and won’t feature 007. Surly the law has carve-outs for such things and therefore maybe the Github thing is covered too.