As
@kschachn says, disregard the video, but yes, fuel in the oil reduces the AW performance of the lubricant, as you would expect, so it would increase wear. By how much, will depend on the formulation of the lubricant and the volume of fuel, so you'd really have to do some testing to figure that out. Dave and I discussed running this testing, but I know he's been busy and hasn't had time to make that a reality as of yet.
You avoid it by owning vehicles that don't fuel dilute, lol. Seriously though, some applications are just inherent diluters, while others, if you ensure they get up to operating temperature regularly, won't have any meaningful fuel in the oil, like my two HEMI's (which are also port injected, which helps considerably).