I've suffered wrist pain for years which I narrowed down to overuse of the mouse - whatever I do to try and alleviate it.
I spent a long, long time training myself to maximise keyboard / minimise mouse use which doesn't cause me pain. Had to stop playing video games among another changes. Clicking over and over again would almost definitely be a trigger. I doubt one time would be a problem but it's not worth it.
I'm not looking for sympathy but to deliberately disable keyboard control in a browser feels egregious to me.