One of the perceived advantages of the style being argued is that it encourages paying attention to the DM’s description of the environment. Nothing is just set dressing, everything is an intractable feature of the environment, and may contain valuable context clues.Barrel/cistern toe-may-toe toe-mah-toe. It's still one object of many in the entire keep. It doesn't stand out, it's not special. It's just set dressing.
Yeah, over reliance on maps can be a problem in this way. As a DM, it is important not to let maps become a replacement for sufficient description of the environment.If you're using one of the prepared maps, the DM may not even mention it.
And again, this is why proper use of telegraphing is important.I don't want my players second-guessing that every time there's a desk in a room they have to carefully search the desk or miss out on treasure.