The issue is only if the DM penalizes you for it. I think the result should ultimately be up to the dice, but explaining what exactly you're doing helps the DM move the story in the right direction.
Also, the game will inevitably require irl skills to play. You can't "roleplay" combat strategy or how much you pay attention irl, so there's no escaping that. I don't think it's that unreasonable to expect players to at least come up with simple descriptions of what they're trying to achieve during a dialogue.