I have indeed made some questionable decisions in the past, and admitted it above. However, knowing these things can and do fall out of the sky, I would recommend never flying over a busy road.
I don't paint myself out to be whiter than white.
As for your video, it's your first effort so with every flight you will become more proficient. There's a lot of movement going on there that is distracting. A good starting point would have been doing a POI auto flight around a point not too far from the castle, which would have given you a smooth, jerk-free arc around the place. Enjoy your drone!