Looks like [mention]Bob Jewett [/mention] and [mention]Dr dave [/mention] have another commentator to educate:
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It is correct that you can double hit or push a shot like this (as I demonstrated in my video), but a foul should not be called unless the double hit or push is visibly obvious. That’s the tough part, especially with no side-view super-slow-motion video replay, unless the stroke has an intentional pushing motion, which is easy to see. It can also happen easily with large tip offsets from center; but again, there must be clear evidence of a double hit or push.