Sure - mainland uses simplified Chinese script (in order to increase literacy), whilst Hong Kong and ROC continue to use traditional Chinese script. PRC went through a similar process with Chinese literacy as the US did with Americanisation of English spelling, though of course the Communists went top down mandate, whilst the Americans relied on the successful distribution of spelling guides and dictionaries.
In relation to this story, one of the key artefacts evidentialising the claims actually is contains traditional Chinese characters. A comparator would be if CIA document that uses English spellings, a significant incongruity. To a Chinese reader, this would be obvious but of course the audience for this was Western market