That's really my point though: it's not being über-cautious to default to NSFW, because the point is to not get fired for accidentally clicking on a landmine.

That's really my point though: it's not being über-cautious to default to NSFW, because the point is to not get fired for accidentally clicking on a landmine. If you can't give some sense of confidence that the tool will prevent that scenario, then it's usefulness is limited.