It's quite rare to be honest, so no. And I've been doing Ruby for a long time.
It's not like every Ruby developer out there tries to monkey patch esoteric things just to confuse the enemy.
And again, monkey patching is possible in every dynamic language.
I"ve seen a developer break 20000 websites at once because he monkey patched a jquery method in a widget our company built, so lets not make this out to be a Ruby thing.
