Eh, yes and no. It's a lot worse than it could be, that's for sure, but there are a lot of major name game controllers that were sold for years and perform worse, yet a lot of players would never notice unless they did a side-by-side comparison against a good one.

For the use case, where the hardware it's controlling has an inherent latency measured in the many dozens to hundreds of milliseconds depending on which model and mode, it doesn't really matter. Likewise for the author's intended use case as a mode selector for an EV. A faster update rate is in all likelihood possible in the hardware, but when you're sharing a bus measured in kilobits per second with other potentially critical messages it seems reasonable to rate limit.