I agree, that Fr. Hewko is a classic case of "To the clean, all things are clean."
That's also why so many Trads in general fall for compulsive liars. When you are a good person, it's hard to imagine someone being evil. It's so foreign to you, it's hard to even conceive of a person doing such a thing.
RealMcCoy -- That's a difficult question to "prove" or answer decisively. If you know him and worked with him, you'd know what we mean when we speak about holiness.
If I only saw him on Youtube, covering up Pablo and Ambrose, etc. I'd sure be wondering myself. But I've been to his Masses, and they are very edifying.
If it weren't for Fr. Hewko, the SSPX-MC operation in Kentucky would be much, much smaller than it is today. He has given, and continues to give them, credibility.
For example, someone told me that in St. Mary's KS about 4X as many people turn out when it's Fr. Hewko coming to say Mass, compared with Fr. Pfeiffer.