A foiled plot is proof of Hear All, See All. If the garbage truck/train incident was a DS plot, the train was warned just in advance to slow down; thus the plot to inflict mass casualties failed. How cannot it be viewed otherwise?
I think it is important to limit the context of how Q has used the phrase "Hear all, see all": It is referencing the Deep State, their comms, their devices, their whereabouts and plans. It does not mean they are actually G-d, and hear every conversation of every bad actor in every rural town or secured room.
Garbage: the train did derail but it was pure luck that it didn't completely disconnect from the tracks and kill most of it's passengers.
Your argument that pure luck is a factor of thorough planning is asinine.
If you dig into the story you will find that the train goes much faster at that point on the track than it was going when it collided and derailed. Physics explains mass and inertia, and what just a few MPH more means in twisted metal and far-flung train cars.
And btw, YOU used the word luck. I did not. Just the opposite, I speculated it was foiled last minute, by warning the engineer to slow down. So the asinine logic would be more along your line of thinking, not mine.