I actually did report it to ebay, I thought I was doing everyone a favor, but like you said they did absolutely nothing and let it sell.

Ofc, they don't want to loose a fee.
There was time, around a decade ago when they were actually taking down listings when they were reported by some of us from the BS forums.

Now that eBay has that verification service thing hopefully the ones that sell over 2k get found, but it won't help with the sub 2k watches

Yes hopefully it'll be a good thing, but I can't help wondering who's doing the verification. Lots of watch sales, lots of different brands, "super-clones", etc.... I'd like to know who they have to be authorities on literally every prestige brand. Also, I'm not sure I'd want some generic "watch person" cracking open an expensive watch I'd just bought, especially something like a diver where gaskets could be compromised. I'll never buy a prestige watch from eBay again, unless I factor in an immediate service to make sure eBay's "experts" haven't done anything untoward.