Tech moved in cycles. We come back to the same half-baked ideas every so on, imagine we just discovered the idea and then build more and more technologies on top to try to fix the foundational problems with the concept until something else shiny comes along. A lot of tech work is “there was an old lady who swallowed a fly”.
I know someone like this. A lot of the possible dementia-induced-confusion is indistinguishable from the pre-dementia reality-distorting lies and malice, to the point you suspect even they don’t know what’s real anymore.