Right now nothing in the story requires the player to utilize those tactics. Doing so makes the game more fun for some folks, but it's in no way necessary to get around any challenges or progress the story.
What you seem to be doing is making a slippery slope argument. And it's a very shaky argument. You're essentially saying, "If this exists then I'll have to use it at some point down the line even if I don't have to use it now."
That's not a strong argument. It's making a prediction while pretending at logic.
Why would a feature exist that you don't have to use? Simple. Because Larian offers multiple ways to get past challenges. And it's there because some people enjoy it. It literally makes the game more interesting for them.
