Like much of Wikipedia its really quite disorganised If an IP has been blocked as an open proxy I think it is right to label it as such so it can be checked later for unblock or imported to other Wikipedia chapterslanguages The template is merely descriptive in this respect  it has been blocked because its thought to be an open proxy as read in the block log If an admin has blocked it for being an open proxy there are two options Either trust the admin and add the label in the way a bot would do or request that it gets rechecked by WPOP If it is probably an open proxy eg this vandalbot but it has only been blocked for vandalism and not as an open proxy I would suggest it gets listed at WPOP WPOP is the definitive place to determine whether something is an open proxy but quite a few admins also know how to identify open proxies as some do not