Of course this is not THAT dramatic of an issue. But it would be nice to have stealth rebalanced.
I don't want to be extreme here in either direction, so I apologize if it seems I am. The point here is that stealth is a major issue presently because it is a major RPG staple. If it is too easy to cheese, it breaks the game.
Let me give an example. I'm a new player. I've been presented with a dire situation - a tadpole in my head. I'm a serious gamer, so I'm going to play the game taking the most logical and careful approach I can because I'm roleplaying. I'm putting myself into the role of my character and becoming said character.
So, what do I do? I'm scared of mind flayers and devil's and devourers popping out at me, so I sneak. I come up on the devourers. Crap! Best be careful. Wait. I can see their sight cones. Okay. Just avoid them. Get into a good position so it's hard for them to get to me. Strategic gameplay.
I shoot. Wait. Oh. I can stealth as a bonus action. Okay. I do so with both characters. The enemies don't do anything. What? Should I now NOT do something intelligent and smart just so I can have enemies come after me? If I do, I break character, for why would my character who has found a valid method of wiping out enemies without being in danger do something that would endanger themselves just so me, the player can enjoy combat? Immersion broken. Either that or I continue to do what my character would do and have tedious and boring battles where my enemies don't fight back simply because Larian allows my characters to shoot, stealth, and enemies do nothing.
If the DM allows players to cheese, then that means the characters WOULD cheese because their lives are in danger and the characters are going to intelligently exploit the cheese to avoid the potential of getting hurt. That is why the cheese needs to be tamed, especially for something like stealth which is SO common. It makes players completely disengage from their characters to NOT cheese the game, thus ruining the roleplay.