I mean hell it doesnt even make sense. This is the first election since then and the votes havent been cataloged yet. How would they even know how many of the voters in 2020 didnt vote in 2024, I wouldnt even expect that information to be available yet.
So again all signs point to completely made up numbers with no real basis in reality. More than happy to see a source and consider it but considering that your crying like a little baby at a question that amounts to "where can i check that fact" tells me all I need to know.