True, I’d expect pretty wild conspiracies like flat earth and chemtrails to be laughed at here, but a disturbing number of lemmings and even progressives in general follow a set of less outlandish - but more insidious - conspiracies that usually fall into the “collusion and malice” type. I could say that General Motors et al. killed most of the US passenger rail and streetcar systems, and most people here would accept that as a fact. Case closed, capitalism is evil and should be abolished, every bad thing is cause by someone with I’ll intentions making it worse.
I, however, tend to be suspicious of those sorts of takes in general. Returning to the alleged “streetcar conspiracy”I’ve actually done quite a lot of research into this and can decidedly say that the primary cause of the decline of mass transit in the US was… There were at least 5 primary causes, none of which were shadowy groups deliberately working to destroy it. Rather it was killed by a changing urban environment, failures to adapt to modal shifts, legacy streetcar systems just generally sucking, and local governments taking transit for granted and assuming that they can hold streetcar companies to exacting standards while expecting them to remain solvent, all while not considering it their problem.
I could go on, and can send some sources and references (maybe not direct links though) if you’d like to learn more. But my main point is that far too many people assume there’s a nefarious actor pulling the strings the whole time when it’s usually several factors lining up all the holes in the Swiss cheese and creating a negative externality we still talk about to this day.
There (usually) isn’t a conspiracy, and if there is it’s unlikely to be anywhere near as all-encompassing as you think. People say there is because it gives them someone to blame, helps channel their anger at something tangible, and just makes a good story.
There are considerable safety concerns regarding private jets, mostly down to the quality of the pilots. At the bigger airlines, pilots are unionized and have consistent schedules they work and routes and aircraft they fly. It’s reliable work and where most pilots (even military) end up.
Meanwhile private aviation needs to be flexible and easy to set up. Contrary to your comment this is the sector that you can usually expect to find more unscrupulous operations and pilots who are basically just Some Guy. Most of the near miss accidents lately have involved private planes (though that can often be attributed to problems in the ATC network).
As for the doors that’s more of a Boeing specific problem, they’ve made a lot of questionable business decisions in recent years and this is the fallout of that. Airbus planes don’t seem to have this problem, and customers seem to be making it clear that they would like their planes to work thank you very much.