Both TFA and your wikipedia special page rely on location access without any fallback for specifying a location if you don't want to give them your real location (or at least not to the precision that GPS allows) or if your are on a desktop where no location info is available. Disappointing.
Yes. In my case, it defaulted to a URL with coordinates in England. Tried editing the URL with localish coords, pressed enter ... nothing. Plenty of space in the toolbar to implement that. (Not the only map service that makes it hard to enter coords.) Also, don't see much need for more than 4 decimal-places after the Lat/Long values.