...did you read Oppose Book Worship? Much of it is exactly Robinson’s point about how some Marxists are more obsessed with interpreting Marxist texts than with real-world engagement:

Whatever is written in a book is right — such is still the mentality of culturally backward Chinese peasants. Strangely enough, within the Communist Party there are also people who always say in a discussion, "Show me where it's written in the book."...

The method of studying the social sciences exclusively from the book is likewise extremely dangerous and may even lead one onto the road of counter-revolution. Clear proof of this is provided by the fact that whole batches of Chinese Communists who confined themselves to books in their study of the social sciences have turned into counter-revolutionaries. When we say Marxism is correct, it is certainly not because Marx was a "prophet" but because his theory has been proved correct in our practice and in our struggle.

See also "I haven't read Marx's Capital, but I have the marks of capital all over my body."