Finding out that there's a systematic issue with a new model that was overlooked until after launch might be, though. It does betray deficiencies in engineering

Finding out that there's a systematic issue with a new model that was overlooked until after launch might be, though. It does betray deficiencies in engineering and testing. Then there was that incident where they launched a batch into the wrong kind of space weather, the atmosphere had been heated up by a solar flare, and the ion engine couldn't overcome the increased drag from the temporarily increased density. It looks wasteful.