For fun, its not unusual for me to do hundred k raids with hydras alone, or whatever troops i think would give others a giggle when they see the screenshots.

I've seen a lot of attacks on player castles where the attacker seems to have just thrown everything they bought from the latest packs at someone.  Offense, eldrich defense, unsupported legendaries...

Some experienced players may do it for laughs, but I suspect some also just don't understand (or don't care) about the mechanics of the game and just expect force of purchased troops to give them the win no matter what they attack with.  Some of these players, when I check their profiles, may be high level, but are still very young castles (6 mo and under).