You are using “phase” incorrectly here and your english is all over the place, so now I’m not even sure what you’re talking about. Are you claiming:
(A) That the moment a stealthed rogue enters within 50 yards of a player, that Blizzard’s API automatically pings that player with a combat log entry letting them know that a rogue has gained Stealth aura within their vicinity. (This is not true).
(B) Claiming that “technically” someone can detect a stealthed rogue second-hand by another player literally seeing the rogue in-game by proxmity and notifying them through Spy’s back-channel communication (a petty semantic).
Please clarify so I can retort accordingly.
Apply this same argument for people telling you to not use Healbot, or not use DeadlyBossMods. Your argument for why it’s okay to use Healbot and DeadlyBossMods also applies to Spy.