Sony dualshocks haptics are exposed as sound devices on linux. Soundwaves are vibrations after all, give enough precision to haptics and they can function as speakers.
You can see aggregated results on `stats` [1] for every year. In general, half the people drop in the first 3-4 days. For last year, by day 12 there is less than 1/5 of day 01. While the stats do count people that completed later, the shape appears to track well with what I saw during the events since 2021.
— or –? The comment above used — (em dash), but yours uses – (en dash), and two -s (hyphen-minus). Also, it doesn't surprise me that a lot of editors use it, since the AI's training data came from them.