My experience was with elderly JWs who took the emblems in the late nineteen sixties to the eighties. To outsiders they certainly would have been considered odd or nutty but then people born at the end of the previous century were not socially homogenised by television and the other media in the subtle way we are induced to conform today. The other consideration is the fact that old people are often losing their mental sharpness, if they ever had it.
I am actually very glad to have known a local old 'partaker' in London UK who in the 1930s had worked with Rutherford himself in New York. He was at the end of his life and losing his memory a bit, also he was treated shabbily by the elders in the cong. When I began to see gaping flaws in the JW vision, I broached the matter with him and he replied confidentially for me to keep my own counsel, which I did... and accelerated the long fade.