They still are, but I'm not comfortable spelling out details. The 95% TSA failure rate should lead you to this conclusion naturally.
> They wouldn't even necessarily need a bomb, anything that can cause a big enough fire mid-flight could be potentially catastrophic.
People have plenty of such things with them as it currently stands. Plenty more can be trivially brought on board in a checked bag or even pocket. But again I'm not going to spell it out.
> I really don't want it to be easy for any random person to cause such fire.
Well that's unfortunate because it already is. I think the primary things protecting passengers are the cost of entry (the true nutjobs don't tend to be doing so well financially) and the passengers themselves. Regarding the latter, the shoe bomber was subdued by his fellow passengers.
It is that easy for a random person to cause such a fire.
It’s probably not that difficult to figure out how to overcharge lithium ion batteries so that they’re prone to catching fire or exploding when connected to a resistor that will overheat them.
Wireless relays are commodity items you can order online from hundreds of vendors.
My checked luggage did not pass xray multiple times because they detected powerbanks. I had to come back and take it out. However it also did pass xray a couple times with powerbanks so it's not a reliable system.
But you can still have multiple batteries (I think up to 10 or so) as long as each individual one is less than 100Wh.
I take security that catches 50 or even 20% of threats any day over 0 security.
That's definitely not an assumption in the threat model.
Non-suicidal hijackings have pretty much been eliminated by cockpit doors as well as 911 changing people's reactions.