NecroLord
Dumbfuck!
Yes.In Thief, if stealth fails, you still can run away, often you can find creative way to escape exploiting the environment (mantling, locking doors, reaching unaccessible spots with rope arrows, etc). You can put your pursuers to the wrong track with noise arrows (you can use anything to make noises, even throwing objects). Or you can just fight back, if you aren't outnumbered. Stealth failure is rarely a true fail state.
The problem is that many autistics think that "ghosting" is the true way to play this game, but forget that it was meant to be played in a different way.
Garrett is a Rogue, not a simple thief...
He has many tricks at his disposal and it is entirely up to you, the Player, to make use of them.