Probably self-explanatory but yea what's the point of locking a chest if you still can just break it. :)
Oh maybe add a config entry for it too so people are free to disable if they don't like.

I just this implemented as a config option in 446ae05 and 3297dce, it'll almost definitely be included in the next update
Cheers

From version 0.2.18 onwards, this is now available via a config option
Cheers