Your position is illogical. The question "can this person do the job" can be a resounding, objective "yes", for someone who, say, also happens to embezzle cash from the company. If that's the "only thing that matters", then the thief should keep the job and continue stealing.

Especially if you want to defend some unpopular position, you have make sure you don't have logical holes in it, like universal absolutes that succumb to easy counterexamples.