Trump is a figurehead and mouth piece only, it’s clear the backing and power behind him is pushing him, not the other way around. If Trump is dead or unelectable then they will sub in someone else. Trump’s “saving grace” is that he was good at speaking in a relatable but obfuscating way which worked to foment the masses against imagined grievances, but that’s not a trait unique to him. He is unfortunately replaceable with not much loss in momentum.

They meant you see video evidence of it on YouTube, not go yourself.

I’m sorry Dave, I can’t do that

Those don’t seal well, so probably not

Aircraft maintenance has been doing the negative pressure unlock tests on cockpit doors for decades, its honestly surprising what isn’t common knowledge. Like others have said, rapid decompression of only a portion of the aircraft is very bad, and will result in massive structural failure as individual compartments aren’t pressure rated and will blow apart. The doors I’ve had experience with had large panels that would pop out when in a negative pressure event.