Anduril does a ton of stuff and often does it better, eg thermal regulation and low-voltage protection.
And a modern, Anduril-capable MCU like the AT1616 (which also has many other advantages, eg factory-calibrated temp sensor) costs less 5 pennies more than the Sonyx (see my post about that, earlier in another thread: Anduril Flashlight Reflash Reference - #19 by dmenezes).
EDIT: fixed typo (Sonix → Sonyx), added link to my previous post.