You should worry about code quality, but you should also worry about the return on investment.

That includes understanding risk management and knowing what the risks and costs are of failures vs. the costs of delivering higher quality.

Engineering is about making the right tradeoffs given the constraints set, not about building the best possible product separate from the constraints.

Sometimes those constraints requires extreme quality, because it includes things like "this should never, ever fail", but most of the time it does not.