Big Pistons Forever
Difficult if not impossible to argue that anything in your post is factually incorrect, or logically unrelated to the pessimistic view you hold . . . perhaps "realistic view" is a fairer, more complete reference.
As related to this SLF/attorney by a long-since retired airline heavy jet captain in the context of what will happen to Boeing after the 737 MAX debacle(s), "Boeing builds airplanes." Well at one point, so too did Willow Run build airplanes (the plant, not . . . .). As they say, past performance does not guarantee future results.
At the same time..... yesterday the Chairman of the House of Representatives Transportation and Infrastructure Committee, together with the Chairman of its Aviation Subcommittee and another Member of Congress, issued a letter to the FAA Administrator, focused on follow-up issues related to the 737 MAX. Specifically, the letter seeks direct answers to issues concerning the inoperability of the AoA Disagree alert, and to Boeing efforts to downplay the MCAS as a modification to the aircraft. (A link to the letter is posted on the current 737 MAX thread.)
The point I'm reaching for here is that in its conclusion, the letter very clearly points to the problems which have emerged with the 787, as well as the certification program for the 777X, as situations in which the Congressional authorities are expecting FAA to significantly improve its oversight effectiveness. On the one hand, the linkage of these situations by the letter's authors reinforce the point that Boeing is going to be under intense scrutiny for the foreseeable future (which as you indicated will tend to reveal more problems and could make those problems seem more significant than might be necessary).
Yet in searching back through assorted recollections of Congressional oversight follow-up with respect to deeply serious problems within the aviation safety ecosystem (including certification programs), I'm not yet recalling any follow-up with as much focus, directness, and even relentlessness, as witnessed in this current T&I (and Aviation Subcomm.) effort. Maybe the hopes some have had for Boeing to emerge a better and viable company, with Engineers at the key roles and stations, in a window of opportunity made possible by the Aircraft Certification, Safety, and Accountability Act -- maybe those hopes will be positively rewarded.
In the meantime, Mr. Dickson's legal eagles will be, one would guess, pretty engaged for the next few days. Here's the link to the letter:
2021-11-29 - DeFazio-Larsen-Stanton LTR to FAA-Dickson RE Boeing Accountability - Enclosure Included.pdf (house.gov)