While I don’t agree with many Boeing decisions as of late, I think “sum ting” may be limited as to your understanding of designing complex avionics, integrating those designs into an airframe, testing it all, and then getting the result past the FAA for certification. The last part is particularly prickly when a legacy platform is involved, and even more so again when the FAA is primed to make an example of the process, for the benefit of all the lawyer-turned-engineer politicians that are providing “oversight”. Simpler programs of all kinds of companies are scrapped for less every day, you just don’t hear about them.