one cool design update we did since this post is making it so that multiple timer / alarm / countdown widgets can be popped out to a floating tray. arrived at this method because the Document PiP API only allows a single floating window, so this creates a single tray of alarms (or whatever widgets they choose) that the user can manage.
Another angle I think worth attention is product developers should build tools / platforms that don't even touch user data and be open about that so consumers can choose those more. I believe people will choose privacy when given the choice more often if the product is just as good or better.