I've been extremely paranoid that I received a UA/rep from Kickscrew based on this thread and a few comparison videos on Youtube. My Cool Greys had the blue stamp inside the shoe and the weird table debossed on the bottom of the insole. I got out my 2018 Concords (purchased directly from Nike) and those also had the blue QC stamp (see photo) and the debossing. The insole on the left is from the Concord. The insole on the right is the Cool Grey from KC. FWIW, my Cool Grey box also had a small round QC sticker, which I've heard people say is a red flag.
I also used a black light on the Cool Greys and confirmed there aren't any "tracing" lines visible which basically was the final peace of mind I needed. There were multiple times during the process that I questioned whether the Real vs UA/rep debate is even relevant anymore. I do think that if people are fraudulently selling them, thats a problem, but if fans just want a rep to enjoy and wear around at a reasonable price then more power to them.
I think for people who started collecting decades ago, 'fakes' carry a huge huge stigma, largely because their quality was so poor. So I know this can be a sensitive topic. Realistically, I dont think the quality gap is that wide anymore, if it even exists. If Nike's QC and supply chain are this lacking, I don't necessarily think 'fakes' = inferior (though many obviously are). As someone with a background in manufacturing, I can see certain reps actually having higher QC standards because they know they will be scrutinized that much more closely on resale platforms. I actually think the real risk is reps eventually work their way into the retail supply, meaning employees of sneaker stores are swapping them out prior to release date (either on a one-off basis or in a very broad organized way). I'm sure at a high level Nike has protocols to prevent this, but once deliveries arrive at retailers they have very little control. Essentially, at that point, there would be no reliable "source of truth" for what qualifies as a "real" pair. Sorry, I didn't intend to get philosophical.
TLDR: if you have the weird table on the bottom of your insole, that doesn't mean your pair is fake.