Both. I have a d100 table. Some things are just random nonsense like in the image. Other times its related information that could be useful, like a reference to a back door somewhere or mentioning a boss likes a particular magic item. Other times its more detailed stuff about their specific role in a plan so the party can get part of the picture but not all of it. But if you roll a 1 or a 100 then they actively describe a big part of the plan.

I'd still drop the hint, but there's a complication (e.g they party has to wait longer, the goblin says it as they're about to open the door, or someone coughs and hides some important detail).