Test code by running it.
Test a rocket by launching it.
In production? I don't disagree that tests 'in production' are sometimes necessary (canary tests), but most of the quirks are often fixed by then.
Honestly I thought they would be live testing fuel exchange in orbit by now. Seems pretty far from it sadly.
launching a rocket is far more analogulous to shipping a release, than it is running code.
I would consider these launches test launches. Production is when they include commercial payloads and humans.