Sounds like fake news. You cant stalk someone with just their Battletag without being mutual friends. You can’t whisper, see if they are online/offline, see what games they have, see what characters they have. The privilege only comes with being mutual battletag friends.
Can you necro my thread? Lol
Convert Forum to BattleTag - Community / General Discussion - World of Warcraft Forums (blizzard.com)