When I am road tripping I usually try to charge such that I make it to the next charger at 3-5%. It ends up being a faster overall trip because you get faster charging speeds.
It's not like a gas tank where unexpected traffic can run you to zero. Bad traffic improves your range. If you bite off more than you intended, just drop 10kph and let the estimate adjust.
The "lack of high speed charging" makes me think the incident you describe was not one of the "usually Tesla" trips.. and I agree the EA/CP/etc. charging network never gives you a reliable picture of where you can charge, which chargers are broken or blocked, and how fast and leaves you to do your own homework.
And like I said, the "almost ran out of battery" events are the ideal, not a problem. It is in your mind that these were bad times.
In any case, dismissing this as a pathology when anyone brings it up, even when they want the same electrification that you do, doesn’t help anyone! Longer range batteries are what the market wants. Tesla isn’t crazy here, that’s why they are building their plans around it.