iserith
Magic Wordsmith
I can't answer that. Your definition of "reasonably specific" may differ from mine.
The rules lay out the standard for reasonable specificity, in particular in the section on finding hidden objects, but also throughout the PHB and DMG. It's not "my" standard.
To me, when a player leaves their statement "generic" it's not an excuse for the DM to take advantage of them. It's more like telling the cook to make them whatever the chef wants.
To me, it's the player not performing his or her role and responsibility in this game. I expect better and find that players rise to the occasion.