All fine, I certainly don't deny I'm in the minority, but if you think one bad shot, even if it doesn't result in a chance, "should" be out every time you'll not get many double-figures scores, let alone half-centuries.
First-chance averages are not very often disputed (most people will agree, if you push them, on what is and isn't a chance), and they're certainly stats, just not very oft-used ones.
The notion that "it all evens each other out in the end", however, I can safely tell you, is complete poppycock. Almost every batsman has more good luck in their career than bad. The fairest way, in my view, is to discount these variations and treat everyone the same. And also to remember things like RUDs and screaming catches.