Basically anything that corrupts data, fails to apply auth controls, or total site outage inducers don’t ship, but almost everything else is fair game (I’m sure I’m forgetting something but you get a taste for these things over time).

When your release cycle is like 10 mins, there’s no real reason to fret over most problems. Obviously do try to write bug free code, but beyond what I listed it’s hardly a fireable offense to push a bug.

The old adage about bugs in prod being 10x more expensive is not true.