It sounds like you're saying that you shouldn't care as much about the quality of "slow killing software" because in theory it can be made better in the future?

But... it wasn't though? Horizon is a real software system that real developers like you and me built that really killed people. The absolutely terrible quality of it was known about. It was downplayed and covered up, including by the developers who were involved, not just the suits.

I don't understand how a possible solution absolves the reality of what was built.