A circumstantial pointer, and I don't disagree with you - if he wasn't licensed, then he was cavalier about the FAA rules; but it's a real stretch to extrapolate that to being causal in the accident; and drawing a character conclusion isn't logical - we don't all adhere to the same code, and his character may have been sterling by most lights. You don't know he wasn't "training" as he flew, apparently since 2013, and I've had pets that could pass the PPL check ride.
There has to be some room for the eccentric and unconventional - this guy may have been neither, I admit - maybe just a jerk; sure, what we do impacts everyone else, but tough toenails. Fatty foods? No exercise? Check your health insurance premiums, we're all paying for those decisions, too. But too bad, because self-determination has a price. Unless we want to go "Chicago" and ban liver pate, or "New York" and ban large cups of soda. I know, this is farther beyond the pale, and analogy is always suspect. If your local herd is too stupid or ignorant to draw a distinction between the occasional reckless azzhat and the large majority of rules-followers, that's just humanity . . .