This argument is not fallacious in any way, shape or form. One of Larian's selling points for this game is the amount of choice they are offering via game design and mechanics. Choice implies that one or more options will not be chosen. Should I complain that Larian provides the option of killing the grove druids because I don't want to do it?
You appear to be making a tautological argument. Anything which allows deviation from the way you wish the game to be is bad. These choices allow the game to deviate from the way you want the game to be so therefore they are bad.
No.
Party control in Baldur's Gate 3 is a complete mess that begs to be addressed. SAY NO TO THE TOILET CHAIN