That may be just a fig-leaf to plaster over 'we couldn't do it'. It's one thing to release software, it's quite another thing to release this software and have it tested, audited and certified safe and that's definitely part of the process of delivering software that is critical to the well being of the users and the other people you're sharing the road with.
And that second part is part-and-parcel of wanting to operate in this space.