Those "rare issues" were also caused by a culture of prioritizing profit and speed of development over safety and training. More of those "rare issues" popped up months later.

Road traffic kills over a million people every year, many of them due to various technical and design flaws. People just tolerate those deaths far better than deaths from plane crashes.

I think this has much more to do with the fact that people drive cars and not airplanes. Most people have confidence in themselves and not others (cf. George Carlin's joke: "Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?"). So they're happy to make things safer if those changes only affect other people (as in an airplane). But when it comes to the fixes that would do the most to reduce traffic fatalities (e.g., lower speed limits on non-highways, more speed cameras, or perhaps most pertinently technology in cars that would make it more difficult to speed, etc.), those affect you too.

This is a common response, but people are usually fairly comfortable with trains and busses.

If the MAX had continued to fly without getting to the root cause it would have been a completely different story than the one that we have today, which is bad enough as it is with both Boeing and the FAA owning what they broke.

Because road traffic deaths are rarely in the hundreds range per event due to preventable criminal negligence. When a bridge collapses and tens of people die, nobody tolerates it.

You’re making a misleading comparison.

If you want to liken the 737 MAX’s failures to road traffic, you have to ask yourself if there’d be broad acceptance of shoddily built, fault-intolerant bridges and freeways. Moreover, would that acceptance be greater or lesser if the public knew that engineers believed their designs were flawed?

Or say, a fleet of supposedly self-driving capable vehicles mayhaps?

Not only that, the issue was caused by Boeing cheaping out on quantity of sensors, and then the ‘there is an issue’ light was sold as a safety upgrade. And the reason this was all needed was because Boeing wanted to escape having to recertify pilots for a new type rating.