There are many millions of people in the US who still have not seen rational expplainations as to the cause of the towers falling. The misinformation, confusion, and subsequent distrust of the government resulting from that and other factors has led to these people still holding onto the false flag narrative. It didn't help that they new who was responsible so soon after the attack (which I found very maddening and suspicious, certainly not comforting) and that certain elements within the Bush administration used the attack for their own agenda to start another war in Iraq. Years later it was proven to be a lie as we're the fact that the FBI was following all of the attackers, the Bush admin warned numerous times, and that fact was covered up as well.
So, given all that and most of those millions of people probably never seeing anything more detailed than Loose Change they have lost all trust in government. This is one of the core elements of our modern day populist uprising.
I had not even been aware of some of the sound explanations I have heard in this thread today. I watched the towers fall live, I watched the hideous war drumming and lying to start the Iraq war, live. In those days (I was 25) as someone who meticulously kept up with all open source material on world events previous, during, and after, I lost any and all faith in government.
Since then, the opioid epidemic has been exposed and was something I lived through as well...all of it. I lost my dad, brother, closest uncle, and my cousin (brother-cuz) to that fucking nightmare.
I know my experience is the tip of the ice berg. I'm smart and I can feel my way through misinformation but it is still tuff to do. I think people greatly misunderstand the impact of these events and how they are still lighting fires to this very day.
It ain't over.