I reported this because at moment I spend most of my time in the yellow brick road for two Do-Less goals, so I get about 16 "Emergency!" emails and push notifications every single day. This means the notifications are basically useless. If every day is an emergency then none is.
So yeah, the Fin button makes sense just as a way to shut them up. I guess it's a way of saying "I'm aware that I will derail if I do any more, no need to continue to notify me".
I was thinking some more about what constitutes an "Emergency", and needs Zeno polling.
For Do More it's obvious: you will derail unless you perform the action specified in your goal by midnight. Zeno polling and "emergency" wording makes perfect sense here.
For Do Less it seems to me that the only real "emergency" is that I've forgotten to add data. And indeed this is what I worry about and would appreciate reminders about. If I've added data and haven't derailed I'm good. If I've added data and have derailed I'm good too!
In general if I've added data today then I'm already aware of how close I am to derailing, so the notifications are redundant. It's when I completely forget to input into Beeminder for a day that I get into trouble.
If you're worried that people won't be aware that they're close to derailing (even when there will be no PPR derailing because of existing data) and so will eat more chocolate than they should do, then instead of 8 Emergency! notifications I'd suggest a single "Be careful, you're close to derailing" message earlier in the evening. (But still have Mergency! if I will derail if I do nothing, e.g. the PPR will derail me due to no data.)
I'd prefer this to a Fin button.