Improve scanner accuracy for difficult card types (e.g., reverse holos)

Walked into a local card shop today with my vintage cards mostly base set WOTC-era holos and 1st Editions to get them evaluated. First card i showed the guy was Pikachu #86 reverse holo from the Legendary Collection (that one with the firework foil) and this guy immediately whips out his phone and runs it through a scanner app. Which is fine. But when the app couldn't identify the card (because that firework reverse holo foil is blinding lol), he straight-up loudcaps me in front of a busy store "Yeah, this one’s FAKE. If it doesn’t pop up on the scanner, it’s usually fake or doesn’t exist. Cool foil, but yeah, that holo pattern isn’t a thing.” I asked him how the fuck he came to that conclusion and he was like "the scanner told me." So I said “yeah but how did, as an actual human being, YOU, the individual with the help of this premium scanner you keep talking about come to that conclusion?" then this dude looked me dead in the eyes and said “Look man, I’m just telling ya what I see and if the scanner doesnt read it then it doesn’t exist. this is the same scanner app the grading companies use. You could maybe get 5 bucks for it because of the cool foil pattern though maybe.” LMAO One of the most iconic cards from that set doesn't exist?(or so I’ve been told) because the scanner app had trouble reading it? That wild lol. All this without him bothering to try typing in the name and number at all btw. I was only going in to fact check myself on the prices I had already gathered anyway but What's crazier is I pulled up the PriceCharting listing for the card after he said all that and I was showing him the price for a raw ungraded Pikachu #86 right in front of him after he said that and showed him that even ungraded in shitty condition one sold just the other day for $300. the best part is after that he was like "Thats the site i pay premium for their scanner." Even the free version works just fine if you have any type of brain matter up in that noggin. Sounds like the scanner wasn't the issue lmao. Even if the card was fake that was still a diabolical way to do business lmao. Gotte love local card shops.. Anyone else have funny run-ins like this?