Though he might have intended exactly that: Losing trophies. If so, then you did him a favour
Anyway, what I find more interesting than completely empty bases, are bases with few towers, short path but full wave troops. Then, the base can still be a challenge for considerably lower/weaker players, but still are considered very weak for at least similarly-ranked players.
I remember several players that had their base open almost always when I was a lot weaker… always was a nice challenge to withstand those overwhelming hordes of wave troops and slowly, carefully advance along a straight path towards the castle gate with my weak spells and low-lvl raiding troops… felt like an achievement