You're not paranoid—KCD2's devs gave Henry photo mode voicelines just to stop you abusing it for stealth…
Kingdom Come: Deliverance 2 lead designer Prokop Jirsa revealed that Henry's photo mode voice lines are intentionally designed to prevent players from using the feature for stealth. This detail is part of Warhorse Studios' philosophy of embracing emergent gameplay and quirky outcomes.
PC Gamer
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