I mean in general. Clicking a confirmation link might not seem much, but when you multiply by every person every month it is. I suspect it would be more work than just fixing problems as they are found, but I might be underestimating the amount of problems that will be found I guess.

Most importantly, I don't want to risk people not participating because they don't want to be spammed. An alternative solution to consider is redoing the map every year, but I still feel it's unnecessary.