I think they do add up, if you allow for around 50,000 in the first century, 50,000 in modern times, and around 44,000 in between. This takes into account that not all anointed “finish their course” faithful to the end.
50,000 is realistic for the first century going by the figures of sociologist Rodney Stark. And 50,000 is realistic for modern times because I think the peak number of anointed ever reported was around 30,000, and again, not all reported anointed remain faithful to death. Say around half the people who report anointed stay faithful to death as a rough estimate.
The 44,000 in between is a pure guess because who knows what counts as anointed in this period. Figures such as Tyndale and Servetus have at times been suggested, and I think the description of a “trickle” has been used.
So all in all, the numbers do add up, although each year that passes, and each increase reported does put a strain on that.