Does anyone know what the author means with the citation dates in:

"Bertrand Russell has argued that philosophical (“scientific”, note by the author) inquiry must stay value-free (Russell, 1956, 2007) "

I was somewhat enjoying the article, but hitting these dates attributed to Bertrand Russel (who died in 1970) made me think of these GPT generated essays that manage to look authentic but commit stupid errors. I was then terrified of being fooled by generative text and now I need to be sure before I can keep reading through.