My impression is just opposite. Do you have any reference proving that vast majority of his work was simply incorrect.
"What did Ramanujan get wrong?" - https://mathoverflow.net/questions/288410/what-did-ramanujan...
"An Overview of Ramanujan's Notebooks" - https://faculty.math.illinois.edu/~berndt/articles/aachen.pd...
My impression is just opposite. Do you have any reference proving that vast majority of his work was simply incorrect.