Nobody rational will. But there are plenty of people with an understandable fear of flying who will create a customer-service kerfuffle over it. On the margin that might not do anything. But in aggregate it could affect how the airlines negotiate settlements from Boeing.
So what's irrational in not believing that 737 Max is safe?
The millions of miles they've flown without incident.
The key difference this conversation demands is a design versus fabrication or maintenance error. MCAS was a design error. It called into question the entire 737 Max fleet. This looks like a fabrication or maintenance mistake. That calls into question all of the planes similarly fabricated or maintained--those have been grounded. It doesn't affect a 737 Max of a different type, that has been flown for years and been through routine inspections, including of the very bolts suspected to be the cause of this accident.
Caveat: I strongly suspect more than the type 9 need to be looked at. But we do not have evidence that they are unsafe.
I think Boeing /engineers/ would argue that statement and instead tell you that Boeing /management/ is self certifying the planes.
I mean not even every army general in every country has killed as many as Boeing.
People want to express outrage. That’s understandable.
Most flight revenue is from frequent travellers, and they understand the business enough to know histrionics won’t change Boeing’s incumbency. A couple people who fly twice a year swapping airlines isn’t going to move the needle. And I doubt a material fraction of them are likely voters who would bother their electeds about this.
You seem to entirely miss the possibility that this has nothing to do with "punishing" anyone, and that people simply don't want to stress out about dying during their flight.
You can call it irrational if you like, that feeling of superiority and a few bucks will get you a snack. The brain worm is there, I know I'll be thinking about it next time I book tickets.
Sure, and as I point out elsewhere, that's reasonable [1]. It's irrational because it doesn't actually change anything, about your situation or systematically.
Not flying a 737 Max to feel better is reasonable. Doing it to be safer, or because it's going to punish Boeing or whatever, is not.