It could also be a reference to the comprehensive SQLite test suite (1) or the fact that it has been in production systems for many years, though it’s initial purpose does make bulletproof quite apt.

(1) https://sqlite.org/testing.html

> Sqllite didn’t start for fun it was built for navy destroyers and submarines.

Those aren't mutually exclusive. I for one find destroyers to be an absolute riot.

I admit that I was merely being metaphorical and referencing the comprehensive test suite, wide distribution and usage.

I wish I had intended that pun embedded in the comment, but from now on ;)