Well, there are people out there who have issues with mask removal. The last class I worked with had a guy in it who did every skill fawlessly but bolted to the surface after 3 rounds of mask drills. After the last time, he quit scuba. Not everyone is a natural in the water and we should all remember that.
Fingrabber, not to derail the thread, but if a diver cannot handle diving without a mask, should they be given an OW card? And I say this as someone who had to overcome a near phobia of not having a mask on. It took me literally 3 months of work in the pool nearly every day to develop comfort with it. Now it's nothing to me.
No, I'm not saying he should have or would have gotten his card - he didn't because he couldn't do a manditory drill. He quit the class even though the instructor offered to work with him privately.
Not everyone has the luxury nor want to practice in a pool for 3 months