When you write it out like that, it's obvious that the denominator is ridiculously large and that it would be much more difficult to explain a lack of deaths in such a pool over a ~3 year period.
The missing worker here is typically included in the lists of "suspicious deaths" because she was an administrative assistant at Los Alamos (a government lab).
1. some people argue that the implication of this (along with other deaths of science-adjacent people) is that there's a murder campaign against scientists
2. but this "implication" is actually completely innumerate, and in reality the implication is something like "within a large population, you would expect some people to be murdered or commit suicide."
I looked at the whole context of responses to the post before my post, so (1) seemed obvious to me, and I was mostly following on with (2), but I see that it was confusing. :)
You got the response you did because it sounds identical to naive-pivot conspiracy theorists who just 'ask questions' to try and expound upon the conspiracy theory.