I agree that it is likely to be misunderstood by the incautious. But that does not mean that it is 'designed' to be so.
Some people's writing & speaking practices do not lead themselves to simple comprehension.
There are even some on here who will take that route, and when queried try to pass it off as irony, or whimsy. If the comments are allowed to stand, unchallenged, no one will ever be sure whether the poster really meant what they posted, or was being either ironic or whimsical.