Throwing ideas out to improve things, without properly thinking about the the root causes for incidents, not waiting for official investigations to be run, and all of that based on some audio recordings and headlines, or news coverage at best, is neither curious nor allows people to learn something. So yes, at a certain point, leave it to the professionals (whom else would one leave it to anyways?) is exactly the right thing to do. And maybe listen to people with more knowledge on a subject (probably not me in that case so).
Insisting on pre-formed "layman" opinions about something as peculiar as aviation, or aerospace, is the opposite of curiosity.
If you don’t agree with something someone posts, contribute to the discussion by explaining the issues. Why shouldn’t the ATC be sacked? Safety culture. Why shouldn’t they install ground radar? Complexity. Etc.
Appeals to authority are the worst kind of arguments because they don’t help us to understand what to expect from them.
Just think of it as CRM for the internet. :)
You have been repeatedly dismissing people in this thread, but HN is about being curious. “Leave it to the professionals” is neither satisfying nor interesting.