I'm 58 so our day was about the same. I wasn't aware of the Blyton reference you make but 1 racist doesn't necessarily reflect the views of the rest of us
The problem is that in my day we saw golliwogs in a similar vein to teddy bears and such like and never even considered that it could mean anything else until the PC brigade changed the focus of it. I certainly don't think we felt it meant we hated black people and wanted to make fun of them