I think the author is more accurately simulating how his brain will feel when he's flying down the road, tracking the trajectories of the very fast metal boxes surrounding him, and suddenly encounters a non-standard ambiguous signal. Turn signal decoding should be instant and unconscious, and this mini signal disrupts that. If anything I think he's understating the risks.

Safety features should not be fun or cheeky. They should be intuitive and obvious.

https://en.wikipedia.org/wiki/Stroop_effect

They specifically address this in the article. You’re being willfully obtuse.

Dishonesty is unbecoming.