They're for an entry level audience, but not just for aspiring SWEs. I've been a professional developer for a while, yet I'm part of the entry level audience for XDP programs[1] or for the ML bias-variance tradeoff [2]. Her posts are "entry-level" because she's so good at making complex stuff easily understandable for beginners of all kinds.

[1] https://jvns.ca/blog/2017/04/07/xdp-bpf-tutorial/

[2] https://jvns.ca/blog/2016/01/02/winning-the-bias-variance-tr...