No, it isn't.
> I need a person who actually knows statistics, how to integrate...
Maybe someone with a strong mathematical education and commercial experience in research... like the author of the post? Just because they focused on some more basic SWE concepts in a blog post doesn't mean that they don't know statistics.
> What would this person be called in 2021?
Data scientist, research scientist, probably some other titles too.
(And the experience of me working with dozens of data scientists corroborates - "data science" means basic Python programming and the kind of boring trial-and-error feature engineering tasks you'd typically assign to a junior software developer.)
I want a person who actually uses statistics and math to drive business decisions, not just someone who took some statistics courses in university before becoming a software developer.
P.S. Honest question, really. I don't want to sift through 500 resumes before finding the person I want.
What you call the title is up to you, “data scientist” will probably net you a lot of people who mostly want to build machine-learning models, maybe “applied statistician” or “data analyst” is a better bet? Hiring out of a local uni is possibly also a decent choice if you can deal with having to bring some maths/stats grads’ business knowledge up to scratch.
I need a person who actually knows statistics, how to integrate, what Bayes' theorem means in practice, the difference between a confidence and a credible interval, etc.
What would this person be called in 2021? (I understand that searching for "data scientist" candidates would be a waste of my time.)