I think if the game is designed to have you think 10 at least seconds to steal anything from each room then you will soon give up stealing.
I think it is important that stealing not be nerfed into the ground... merely nerfed. Right now it's too easy, but it shouldn't be made impossible. Changes should be curbed by moderation and common sense.
Being able to use Walk in Shadows right in front of an NPC and have them think nothing of it, then they see plates and cups move off the table then disappear, all without paying it any mind... that's just not common sense. If that happened to me in my house, and I lived in a world where magical invisibility was a thing, I'd probably figure out what was going on. No idea what I'd do about it, but I'd know some invisible dude is stealing from me.
